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The Script component can be used as a source, a transformation, or a destination. This component supports one input and multiple outputs. Depending on how the component is used, it supports either an input or outputs or both. The script is invoked by every row in the input or output.
If used as a source, the Script component supports multiple outputs.
If used as a transformation, the Script component supports one input and multiple outputs. If used as a destination, the Script component supports one input.

References:
https://msdn.microsoft.com/en-us/library/cc505848.aspx

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Environments (Test, Production etc) are associated with projects by creating references to the environments in the projects.

References:
https://docs.microsoft.com/en-us/sql/integration-services/control-flow/data-flow-task

In the User and Group Permissions functional area, administrators can grant permission to functional areas, to attributes (on the Models tab), and to members (on the Hierarchy Members tab). Overlapping permissions are resolved to determine a user’s permission to each individual attribute. References:
https://docs.microsoft.com/en-us/sql/master-data-services/user-and-group-permissions-functionalarea- master-data-manager?view=sql-server-2017

References:
http://msdn.microsoft.com/en-us/library/ff877917.aspx http://msdn.microsoft.com/en-us/library/gg492277.aspx

References:
http://msdn.microsoft.com/en-us/library/ms135965.aspx http://msdn.microsoft.com/en-us/library/ms345161.aspx

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References:
http://msdn.microsoft.com/en-us/library/ms140246.aspx http://msdn.microsoft.com/en-us/library/ms180378(v=sql.110).aspx

Private buffer performance counters
Instead of being created by an SSIS instance, private buffers are created by particular transformation process themselves. Their purpose is to support and optimize the performance of temporary tasks in Pipeline, like the Aggregation transformation, Sort transformation etc.
Private buffer memory: this performance counter shows the full amount of physical or virtual memory used by all of the current private buffers within the Data Flow engine task in the monitoring cycle. During a data transformation, if the Data flow engine creates a buffer to support itself (not the transformation), that buffer is not considered as private.
References:
https://www.sqlshack.com/ssis-pipeline-performance-counters-guide/

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References:
http://smallbusiness.chron.com/import-csv-ssis-46849.html

XLSX files, the new file type in Excel 2007/2010 cannot be opened with Excel Source/Destination in SSIS. To use XLSX in SSIS we need to install ACE driver and use OLE DB Source/Destination to read read/write data in XLSX files.
ACE is a set of components that facilitate the transfer of data between existing Microsoft Office files such as Microsoft Office Access (*.mdb and *.accdb) files and Microsoft Office Excel 7 (*.xls, *.xlsx, and *.xlsb) files to Microsoft SQL Server. If the SQL Server or your development box does not have ACE driver then install that 1st.
Note:
* The most efficient way to link to SQL Server is using an OLEDB connection manager. Incorrect:
Not B:
* Address Windowing Extensions (AWE) is a Microsoft Windows application programming interface that allows a 32-bit software application to access more physical memory than it has virtual address space.
* Address Windowing Extensions (AWE) is a set of extensions that allows an application to quickly manipulate physical memory greater than 4GB. Certain data-intensive applications, such as database management systems and scientific and engineering software, need access to very large caches of dat
A. In the case of very large data sets, restricting the cache to fit within an application\'s 2GB of user address space is a severe restriction.

Reference:
http://www.rafael-salas.com/2012/01/ssis-2012-quick-peek-to-data-taps.html http://msdn.microsoft.com/en-us/library/hh230989.aspx http://msdn.microsoft.com/en-us/library/jj655339.aspx

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The Processor: % User Time value “Corresponds to the percentage of time that the processor spends on executing user processes such as SQL Server.”
In other words, this is the percentage of processor non-idle time spent on user processes
If the Processor:% User Time high values are caused by SQL Server, the reason can be non-optimal SQL Server configuration, excessive querying, schema issues, etc. Further troubleshooting requires finding the process or batch that uses so much processor time
References:
https://www.sqlshack.com/sql-server-processor-performance-metrics-part-2-processor-user-timeprocessor- privilege-time-total-times-thread-metrics/

Note: Type of Slowly Changing Dimensions
Slowly Changing Dimensions are categorized into three types named: Type 1, Type 2, and Type3. The Type 1 SCD does not maintain the history of changing attributes, it overwrites values of the attributes. Type 2 maintains historical values for changing attributes. Type 3 that we do not use much maintains separate columns for changed attributes. SSIS SCD wizard supports both Type 1 and Type 2.
Using MERGE instead of SCD wizard
Replacement of SCD wizard with MERGE is not a straightforward technique. If the SCD has both Type 1 and Type 2 types attributes, they need to be handled separately.

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Reference:
http://msdn.microsoft.com/en-us/library/hh479588.aspx http://msdn.microsoft.com/en-us/library/hh213290.aspx http://msdn.microsoft.com/en-us/library/hh213373.aspx

Data Quality Server Minimum System Requirements
* SQL Server 2012 Database Engine.
* Memory (RAM): Minimum: 2 GB Recommended: 4 GB or more
Note: SQL Server Data Quality Services (DQS) is a new feature in SQL Server 2012 that contains the following two components: Data Quality Server and Data Quality Client.

References:
http://msdn.microsoft.com/en-us/library/bb190163.aspx http://msdn.microsoft.com/en-us/library/ee633737.aspx http://msdn.microsoft.com/en-us/library/ee633759.aspx http://msdn.microsoft.com/en-us/library/ee633745.aspx http://msdn.microsoft.com/en-us/library/ee633724.aspx http://msdn.microsoft.com/en-us/library/ee633733.aspx http://msdn.microsoft.com/en-us/library/ff487058.aspx

References:
http://msdn.microsoft.com/en-us/library/ms141775.aspx http://msdn.microsoft.com/en-us/library/ms137653.aspx http://siddhumehta.blogspot.com/2009/05/validateexternalmetadata-property.html http://msdn.microsoft.com/en-us/library/ms135950.aspx

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