BimlFlex Settings Reference Documentation

This document outlines the metadata and framework settings available in BimlFlex.

These settings drive the behavior of the BimlFlex product.

By changing settings, the produced artifacts can adapt to specific requirements for file locations, naming conventions, data conventions etc.

Align these settings with the organizations best practices and environmental requirements.

Note

For additional details on using the Settings Editor in BimlFlex refer to Installing BimlFlex.

AzCopy

Setting	Type	Description
Path		The file path to the local installation of the "AzCopy" Command.
Log Location		Sets the log location for AzCopy v.10 log files to the AZCOPY_LOG_LOCATION environment variable.
Version		The AzCopy version used. This should match the AzCopy command found in the AzCopyPath setting. Use a numeric such as 8 or 10 as values to specify the AzCopy version.
Log Level		The log level for AzCopy v.10 logs. Available log levels are: "NONE", "DEBUG", "INFO", "WARNING", "ERROR", "PANIC", and "FATAL"
Cap Mbps		The AzCopy v.10 transfer speed cap in Mbps.
Concurrency		Specify the number of concurrent AzCopy operations to start. To reuse the current environment variable without setting this value for each object, leave this blank when using AzCopy v.10.
Use AzCopy		Should the generated files be uploaded using "AzCopy" as part of the SSIS Packages. Disable if the solution uses an alternative file management process.
Create Container		Determines whether the pipeline includes a step to create the destination container. Only enable this when needed, such as to allow load scenarios where the target container is removed between loads.
Set Environment Variables		Determines whether the environment variables controlling AzCopy v.10 are set before each object is loaded.
Use SAS Token		Determines whether AzCopy used a SAS Token for access. This is the only supported authentication mechanism for AzCopy v.10.

Azure

Setting	Type	Description
Data Factory Name		The default Azure Data Factory name to use.
Subscription Id		The default Azure Subscription Id to use.
Resource Group		The default Azure Resource Group name to use.
Key Vault		The default Azure Key Vault name to use for Linked Services.
Function Bridge Name		The default Azure Function Bridge Name to use.
Function Bridge Key		The default Azure Function Bridge Key to use for authentication between the Azure Data Factory and the Azure Function App.
Use Function Bridge Key Vault		Determines whether the Azure Function Bridge uses the Azure Key Vault specified in the AzureFunctionBridgeKeyVault settings.
Function Bridge Key Vault Name		The name of the Azure Key Vault used by Azure Data Factory to access the function key for the Azure Function Bridge when the "AzureFunctionBridgeUseKeyVault" setting is enabled.
Function Bridge Key Vault Secret		The name of the Azure Key Vault secret used by Azure Data Factory to access the function key for the Azure Function Bridge when the "AzureFunctionBridgeUseKeyVault" setting is enabled.
Function Bridge Key Vault Secret Version		An optional Azure Key Vault secret version used by Azure Data Factory to access the function key for the Azure Function Bridge when the "AzureFunctionBridgeUseKeyVault" setting is enabled. If not specified, the current version of the secret will be used.
Integration Runtime Name		The default Azure Data Factory Self Hosted Integration Runtime name to use for Linked Services.
Integration Runtime Is Shared		Is the referenced Self Hosted Integration Runtime shared from another Data Factory?
Linked Resource Id		The Resource Id for the referenced Self Hosted Integration Runtime Linked Service that is shared to this Data Factory.
Deployment Container		The Storage Container to use when accessing Blob Storage for linked ARM template deployment.
Deployment Account Name		The Storage Account name to use when accessing Blob Storage for linked ARM template deployment.
Deployment Account Key		The Storage Access Key to use when accessing Blob Storage for linked ARM template deployment.
Deployment SAS Token		The Storage Access SAS Token to use when accessing Blob Storage for linked ARM template deployment.
Emit Powershell Environment Checks		Determines whether the PowerShell deployment files include environment verification by calling Get-InstalledModule -Name Az.
File Compression Codec		The compression type (Codec) to use for the Azure Data Factory File Dataset.
File Compression Level		The compression level to apply for the Azure Data Factory target File Dataset.
File Encoding Name		The File Encoding Name for the Azure Data Factory target File Dataset.
File Null Value		The Null value definition to use for the Azure Data Factory target File Dataset.
Archive Stage		Determines whether the staged Blob Storage files are moved to the defined archive container, once processing has completed. This will use AzCopy v.10 commands, so requires AzCopy v.10 and SAS Tokens for access.
Stage On Extract		Determines whether the Azure-based Extract and Load process runs the stage process for the extracted data in the destination Azure Synapse.
Create Dummy File		Should the Staging package copy a "placeholder.dummy" file to accommodate the PolyBase limitation when no files exist.
Create External On Stage		Should the Staging process "DROP" and "CREATE EXTERNAL TABLE" before running the Staging Stored Procedure.
External File Conversion		By default, the extraction process from a source to blob storage applies several conversions to create files that are supported by PolyBase. This setting allows control of this conversion process.

Azure Copy

Setting	Type	Description
Enable Staging		Determines whether the Azure Data Factory Copy Activity uses Staging. Use this together with Copy Method "PolyBase" to load data to PolyBase supported targets.
Staging Settings		The staging settings to use when enabling Staging for the Copy Activity. Use "@@this" to automatically use the Linked Service associated with the PolyBase Landing connection.
Enable Logging		Determines whether the Copy Command uses logging.
Log Settings		The settings for the logging in the Copy Activity, when logging is enabled. Use "@@this" to automatically use the Linked Service associated with the PolyBase Landing connection.
Copy Method		For the Copy Activity, specifies the Copy Method to use. Bulk Insert allows direct inserts to the target. PolyBase allows automatic staging in a Blob Container and loading through external tables and PolyBase to supported targets.
PolyBase Settings		The default Azure PolyBase settings to use when using the Copy Method "PolyBase" and enabling Staging for the Copy Activity.
Retry Attempts		Maximum number of retry attempts for Azure Copy.
Retry Interval		The number of seconds between each retry attempt for Azure Copy.
Timeout		Maximum amount of time the Azure Copy Activity can run. Default is 7 days. Format is in D.HH:MM:SS.
Secure Input		When enabled, input from the activity will not be captured in ADF logging.
Secure Output		When enabled, output from the activity will not be captured in ADF logging.
Data Integration Units		Specify the powerfulness of the copy executor. Value can be 2-256. When you choose "Auto", the Data Factory dynamically applies the optimal DIU setting based on your source-sink pair and data pattern.
Degree of Copy Parallelism		For the Copy Activity, specifies the degree of parallelism that data loading should use.
Data Consistency Verification		Determines whether the Copy Activity validates data consistency for supported sources and sinks.

Azure Storage

Setting	Type	Description
Archive Container		The Container Name to use for the archive process. This should be indicative of the purpose of the contents, such as "archive".
Archive Account Name		The Azure Blob Storage Account Name to use for archiving data as files in blob storage,
Archive Account Key		The storage Access Key to use when accessing the Blob storage.
Archive SAS Token		A storage access SAS Token to use when accessing the Blob storage.
Error Container		The Container Name to use for the error process.
Error Account Name		The Azure Blob Storage Account Name to use for error files in blob storage.
Error Account Key		A storage Access Key to use when accessing the error file Blob storage.
Error SAS Token		A storage access SAS Token to use when accessing the error file Blob storage.
Stage Container		The Container Name to use for the staging process.
Stage Account Name		The Azure Blob Storage Account Name to use for staging data as files in blob storage.
Stage Account Key		The storage Access Key to use when accessing the staging Blob storage.
Stage SAS Token		The storage access SAS Token to use when accessing the staging Blob storage.
Blob Storage Domain		The AzCopy domain to use.
External File Format		The default External File Format definition to use.

Core

Setting	Type	Description
Global Default Date		The global default date to use for timelines.
Convert GUID To String		Determines whether a source column of type "GUID"/"UniqueIdentifier" is automatically converted to a String data type.
Use BimlCatalog		Determines whether BimlFlex uses the BimlCatalog database for logging, auditing and configuration variables.
Hash Null Value Replacement		The Null value replacement to be used when hashing.
SSIS Hash Null Value Replacement		The Null value replacement to be used when hashing using the Varigence BimlFlex SSIS Custom component.
SSIS Convert Date To String With Scale		Used to control the converted DateTime in the FlexToBk to ensure compatability with the SQL code.
Integration Key To Upper		Determines whether strings in the Integration Key will be upper-cased automatically.
Lookup Table Pattern		The table naming pattern for the Lookup Table.
String Concatenator		The string value used in concatenating Integration Keys and Hash values (sanding element). Defaults to "~".
Hash Algorithm		The hashing algorithm to use. ("MD5"/"SHA1"/"SHA2_256"/"SHA2_512").
Hash Binary		Determines whether the generated hash value is stored as a binary representation, as opposed to a string representation.
Hash Integration Key		Determines whether the Integration Key is hashed.
Use SQL Compatible Hash		Determines whether the SSIS custom inline hashing component use a hashing approach compatible with the SQL Server "HASHBYTES()" function.
Use SQL Compatible Row Hash		Determines whether the SSIS custom inline hashing component for Full Row Hashing use a hashing approach compatible with the SQL Server "HASHBYTES()" function.
Cast Boolean to True False for Hash		Determines whether the SQL inline hashing function for MSSQL, SQLDB and Synapse converts BIT (Boolean) values to True/False instead of 1/0.
Root Path		The default root path for any other BimlFlex related file operations.
Archive Path		The default path for file archive operations.
Export Path		The default export path for file exports.
Import Path		The default import path for file imports.
Lookup Cache Path		The default path for Cache files used in lookups.
Configuration Path		The folder where SSIS configuration files are stored.
7 Zip Path		The location of the 7-zip executable for zip operations requiring 7-zip.
Archive Import		Determines whether imported files are archived after processing.
Zip Archive Import		Determines whether imported files are compressed when they are archived.
Zip Output File		Determine whether the created output file is zipped.
Zip Extract File In Memory		Determines whether the file zip process runs in-memory or through file streams. Files larger than 2 GB are always zipped through file streams.

Data Mart

Setting	Type	Description
Append Dimension		The string to append to Dimension object names.
Append Fact		The string to append to Fact object names.
Append Staging		The string to append to the Data Mart staging object names.
Infer Dimension Members		Determines whether the Data Mart process infers Dimension Members.
Stage On Initial Load		Determines whether the Data Mart stage process executes as part of an initial load.
Append Schema		Determines whether the Schema name is appended to Object names in the Data Mart.
Apply Lookup Filter		Determines whether the SSIS Lookup checks for existing rows and applies a filter condition when joining the source table to the destination table. This applies to Data Mart processing and aims to optimize memory usage.
Display Database Name		Determines whether the Database name is included in Data Mart object names.
Display Schema Name		Determines whether the Schema name is included in Data Mart object names.

Data Vault

Setting	Type	Description
Use Hash Keys		Determines whether the Data Vault uses Hash Keys, alternatively Natural Keys can be used by disabling this setting.
Accelerate Link Satellite		Determines whether the BimlFlex Accelerator creates Link Satellites from source metadata, containing attributes and effectivess attributes.
Accelerate Link Satellite Keys		Determines whether the BimlFlex Accelerator adds the Integration Key to Link Satellites.
Append Link Satellite Record Source		Determines whether the BimlFlex Accelerator appends the Record Source to the Link Satellite name.
Accelerate Hub Keys		Determines whether the BimlFlex Accelerator adds source key columns to the Hub in addition to the Integration Key.
Accelerate Link Keys		Determines whether the BimlFlex Accelerator adds source key columns to the Link in addition to the Integration Key.
Apply Data Type Mapping RDV		Determines whether the Data Type Mappings are applied to the Raw Data Vault. The Data Type Mappings function allow expansion of data types.
Stage Reduce Link Keys		Enable this to reduce additional Link hash keys in the staging table.
Accelerate Two Way Links		Determines whether the BimlFlex Accelerator splits all Links into Two-Way Links. Otherwise, it will combine all Non Nullable references into a single Link or Unit of Work.
Process On Stage		Determines whether the Data Vault stored procedure is called after the Extract has been done. For Azure projects this must be combined with "AzureStageOnExtract".
Infer Link Hub		Determines whether the Data Vault process loads all involved Hubs when a Link table is loaded, independent of Hub loads from referenced tables. Enabling this setting will force BimlFlex to always load all corresponding Hub tables when a Link is loaded from a given source, even though this could be redundant because the Hub information may be provided by referenced tables.This applies to scenarios where the source system reliably manages referential integrity.
Apply Lookup Filter RDV		For Staging-to-Data Vault processes, determines whether the SSIS Lookup checks for existing rows by applying a filter condition joining the staging table to the destination table. This is to optimize memory usage.
End Date Satellite		Determines whether end dating is applied to the Raw Data Vault Satellites.
Single Change Satellite		Set this to true if loading into Data Vault and the Delta only has single changes to each key. This will provide optimized ELT loads.
ELT Delta Is Derived		Set this to true if loading into Data Vault and the Delta has already been derived. This will provide optimized ELT loads for scenarios like streams or insert only transaction source tables.
Use Cache Lookup		Enables using the file based cache lookup feature of SSIS (for lookups).
Bridge Lag Days		Specify the number of days the Bridge process should go back and look for changes to reprocess.
Pit Lag Days		Specify the number of days the Point-In-Time process should go back and look for changes to reprocess.

Data Vault Naming

Setting	Type	Description
Append Hub		The string to append to Hub names.
Append Link		The string to append to Link names.
Append Link Satellite		The string to append to Link Satellite names.
Append Satellite		he string to append to Satellite names.
Append Point In Time		The string to append to Point In Time table names.
Append Bridge		The string to append to Bridge table names.
Append Surrogate Key		The string to append to Surrogate/Hash Key column names.
Default Schema		The default schema to use for the Raw Data Vault.
Preview Schema		The schema name to use for the Data Vault Accelerator preview objects.
Append Reference		The string to append to Reference table names.
Append Hierarchy Link		The string to append to Hierarchical Link names.
Append Same As Link		The string to append to Same-As Link names.
Append Schema		Determines whether the schema is appended to the names of accelerated Data Vault object.
Display Database Name		Determines whether the database name is displayed in the Raw Data Vault.
Display Schema Name		Determines whether the schema name is displayed in the Raw Data Vault

Delete Detection

Setting	Type	Description
Apply Delete Detection PSA		Use the default process to insert detected deletes into the Persistent Staging Area table.
Apply Delete Detection RDV		Use the default process to insert detected deletes into the Data Vault Satellite tables.
Enable Delete Detection		Determines whether BimlFlex applies a separate key load pattern that will enable detection of hard deletes in the source

Model

Setting	Type	Description
Apply Naming Convention		Naming convention to use for objects and columns.
Infer Integration Key From		The convention to infer the Integration Key from. Case sensitive options are "None", "PrimaryKey", "UniqueKey", "FirstColumn", "IdentityColumn" and "ColumnName::[NameOfColumn]".
Retain Existing Metadata		Comma-separated list that contains the existing Metadata that should be retained when doing an import of existing data.
Pad Integration Key		Number of Characters to pad the Integration Key to.
Append Integration Key		The string to append to Integration Keys.
Key Ends With		The strings that BimlFlex interprets as key identifiers.
Add Record Source To Integration Key		Import Metadata will add "@@rs" to Integration Keys if true.
Change References To Integration Key		Determines whether the Import Metadata feature adds derived Integration Keys based on source references, or use source columns for references.
Import Views		Determines whether database Views are imported when importing Metadata.

Naming

Setting	Type	Description
Suffix Or Prefix Column		The "SuffixOrPrefixColumn" key defines the behavior when defining column names.
Suffix Or Prefix Object		The "SuffixOrPrefixObject" key defines the behavior when naming objects.
Append Procedure Name		The string to append to procedure names.
Append Batch Name		The string to append to Batch names.
Append Load From Psa Name		The string to append to the Load From PSA process name.
Stage Column With Business Name		When defining a Model Override name for a column, setting this to true will use the override name as the staging column name.
Stage Object With Business Name		When defining a Model Override name for an object, setting this to true will use the override name as the staging table name.
Use Record Source As Append		Specifies if the record source should be appended to object names
Use Record Source As Schema		Determines whether the Record Source is used as the schema name for Staging- and Persistent Staging Area tables.

Operations

Setting	Type	Description
Archive Retention Period		The archive data retention period to use for the BimlFlex database cleanup process.
Snapshot Retention Period		The snapshot data retention period to use for the BimlFlex database cleanup process.

Orchestration

Setting	Type	Description
Constraint Mode STG		The table reference constraint mode to apply for the STG (Staging) tables in BimlStudio for diagram previewing. Allowed values are "DoNotCreate", "CreateAndNoCheck" and "CreateAndCheck".
Constraint Mode DV		The table reference constraint mode to apply for the Data Vault database. Allowed values are "DoNotCreate", "CreateAndNoCheck" and "CreateAndCheck".
Constraint Mode DM		The table reference constraint mode to apply for the Data Mart database. Allowed values are "DoNotCreate", "CreateAndNoCheck" and "CreateAndCheck".
Rollback STG		Determines whether the Batch orchestration engine rolls back (delete) committed changes to the Staging database in case of a failed process.
Rollback PSA		Determines whether the Batch orchestration engine rolls back (deletes) committed changes to the Persistent Staging database in case of a failed process.
Rollback DV		Determines whether the Batch orchestration engine rolls back (deletes) committed changes to the Data Vault database in case of a failed process.

Snowflake

Setting	Type	Description
Account		The Snowflake account name to use.
Region		The Snowflake region to use.
Warehouse		The Snowflake warehouse name to use.
Database		The Snowflake database name to use.
Schema		The Snowflake schema name to use.
Password		The Snowflake password to use.
User		The Snowflake user name to use.
SnowSQL Config		Location of the Snowflake SnowSQL configuration file.
SnowSQL Path		The path to the local installation of the Snowflake SnowSQL CLI Client tool.
SnowSQL Connection		The Snowflake SnowSQL connection to use.
File Format		The Snowflake file format to use.
Remove Stage		Determines whether the Snowflake stage is removed prior to loading the new stage file.
Auto Suspend		Determines where the Snowflake database can Auto Suspend.
Scale Up		Determines whether the Snowflake processing can scale up the Snowflake Warehouse at the start of the Batch.
Scale Up Size		The size the Snowflake Warehouse can be scaled up to.
Scale Down		Determines whether the Snowflake processing can scale down the Snowflake Warehouse at end of the Batch.
Scale Down Size		The size the Snowflake Warehouse can be scaled down to.
Output Path		The folder where SnowDT database files are created.

SSDT

Setting	Type	Description
Include .NET Core Project Support		Determines whether SSDT Project files and build script files are created with .NET Core support.
.NET Core Targets Path		The folder where the .NET Core Target and build support files are located.
Output Path		The folder where SSDT database projects are created.
Suppress TSql Build Warnings		Suppress TSql Build Warnings.
Include External Tables		Determines whether External Tables are included in the generated SSDT Project.
Overwrite External Table Defaults		Determines whether existing external table-related files are overwritten.
Include Master Key		Determines whether the Master Key statement is includes in the SSDT Project.
Default Master Key		The default Master Key SQL Statement to use.
Include Credential		Determines whether the Credential statement is included in the SSDT Project.
Default Credential		The default Credential SQL Statement to use.
Include External Data Source		etermines whether the External Data Source statement is included in the SSDT Project.
Default External Data Source		The default External Data Source SQL Statement to use.
Include External File Format		Determines whether the External File Format statement is included in the generated SSDT Project.
Default External File Format		The default External File Format SQL Statement to use.

SSIS

Setting	Type	Description
Server		The SSIS Server name to use for generated deployment script files.
SSISDB		The SSISDB database name to use for generated deployment script files.
Folder		The SSIS Catalog folder name to use for generated deployment script files.
Create Folder		Add Create SSIS Catalog Folder in deployment script files.
SqlCmd Override		Override the sqlcmd connection in the Create SSIS Catalog folder in the deployment script.
BLOB Temp Storage Path		The Blob Temporary Storage Path that SSIS uses to spool temporary data to disk when it runs out of memory.
Buffer Temp Storage Path		The Buffer Temporary Storage Path that SSIS uses to spool temporary data to disk when it runs out of memory.
Command Timeout		SSIS Command Timeout to use. Override the value here to change the default SSIS behavior.
Auto Adjust Buffer Size		SSIS Auto Adjust Buffer Size configuration for supported SQL Server versions.
Check Constraints		SSIS Destination configuration for checking constraints. Defaults to "False", as that is recommended for data warehouse destinations.
Default Buffer Max Rows		SSIS Data Flow configuration for Default Buffer Max Rows for supported destinations.
Default Buffer Size		SSIS Data Flow configuration for Default Buffer Size for supported destinations.
Delay Validation		Determines whether generated SSIS packages use delayed validation for metadata validation.
Engine Threads		Maximum number of SSIS engine threads to employ.
Max Concurrent Executables		Maximum number of concurrent SSIS executables to employ.
Maximum Insert Commit Size		SSIS Data Flow configuration for Maximum Insert Commit Size for supported destinations.
Process Subfolders		Determines whether a flat file source loop loads files in subfolders, of the specified source folder.
Rows Per Batch		SSIS Data Flow configuration for Rows Per Batch for supported destinations.
Validate External Metadata		Determines whether generated SSIS packages validate external metadata.

Staging

Setting	Type	Description
Persist History		Provides an option to override the Connection level attribute "PersistHistory" for more granular control.
Apply Data Type Mapping Stg		Determines whether the Data Type Mappings that are applied to source tables are used in the Staging and Persistent Staging databases.
Delete Import File		Determines whether imported files are deleted after processing.
Add Row Hash Key Index		Enable to add a unique, non-clustered constraint on the FlexRowHashKey and EffectiveFromDate columns in staging tables.
Extract File Encoding		For an extracted file, specify a different encoding than the standard Unicode as produced by the BimlFlex source to file process. Valid choices are "ASCII", "BigEndianUnicode", "UTF32", "UTF7", "UTF8", "Unicode".
Extract File Split Size		The file size to split extracted files into multiple files for.
Use UTF8 Data Conversion		Determines whether SSIS Express-based extract packages apply UTF8 data conversion.
Use TRY_CAST Conversion		Determines whether the select-to-stage tables uses TRY_CAST and TRY_CONVERT.
Select Blob Row Order By		Row Order definition to use for Blob source queries.
Select Stage Row Distinct		Determines whether the select-to-stage tables apply a row number function based on the defined key, or us a distinct based on the full row including the HASH.
Apply Extract Conversion In Data Flow		Determines whether SSIS extracts-to-file apply data conversion for target files in the SSIS Data Flow instead of in the source select statement.

Staging Naming

Setting	Type	Description
Append Name External		The string to append to External tables when using PolyBase.
Append Name Landing		The string to append to Landing tables when deploying using Azure Data Factory Copy directly to the database.
Schema Name Pattern		Specific override behavior for the schema name for staging tables and other database assets.
Object Name Pattern		Specific override behavior for the object name for staging tables.
Delete Object Name Pattern		The name to use for the Delete Objects when using Delete Detection.
Delete Schema Name Pattern		The name to use for the Delete objects schema when using Delete detection.
Append Record Source		Determines whether the Record Source Code from the connection is appended to the staging object name.
Append Schema		Determines whether the source Schema is appended to the object name in the staging layer.
Display Database Name		Controls if the source database name should be included in the generated SSIS package name.
Display Schema Name		Controls if the source schema name should be included in the generated SSIS package name.

Staging Persistent

Setting	Type	Description
Append Schema		The string to add to the PSA objects when Staging and Persistent Staging are co-located in the same database.
Enable End Date		Apply end dating in the PSA. This will allow timelines to be maintained in the PSA. Disable this to configure an insert-only approach for the PSA for optimized load performance.
Bypass Persistent Checks		Enable this to bypass lookups, and directly applies all records to the Staging and Persistent Staging tables.
Use Cache Lookup		Determines whether the PSA lookup caches the data to disk when using SSIS. Use this if it is not possible to use the normal in-memory lookup behavior due to memory constraints.
Disable Stage, Persist Only		Enable this to skip the staging layer and only persist changes directly in the PSA. This applies to SSIS output only.
Delta Collapse Rows		Should the PSA Processing apply row collapsing logic.
Delta Detection in SQL		Determines whether the delta detection applied when loading changes to the PSA uses a SQL procedure that runs on the Staging Area table, and not as part of the PSA pattern.
Delta Is Late Arriving		Does the PSA load include late arriving deltas.
Delta Is Single Change		Enable this if loading into PSA and the delta only has single changes to each key. This will provide optimized ELT loads.
Delta Stage All Rows		Determines whether the delta process stages all rows. Otherwise, the process will compress row changes into distinct change rows - removing full row duplicates.
Delta Is Derived		Determines if a PSA table already receives a data delta. Enable this if loading into PSA and the delta has already been derived earlier.
Merge All Rows		The Merge All Rows setting will replace the hash (Row Hash Type 1 and Row Hash Type 2) with a NULL value in the source-select of the merge statement. Only applies in the specific case when the source is an "Object" and the target is a "Table".
Truncate PSA If Has Rows		Determines whether the PSA table should be truncated if it already contains records. This should be disabled for normal PSA behavior. Enable this for specific requirements where previously loaded rows should be discarded.