Interview Questions
Standard DSO vs Optimized DSO
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Standard DataStore Objects
A standard DSO has three transparent tables on the database.
- Activation Queue: Holds the records that are to be updated, not yet been activated.
- Active Data:Table which holds active data.
- Change Log:Holds the change history for delta loads.
Process of Data transfer to DSO
- Data gets first loaded into the activation Queue also called the New data table.
- Dataupon “Activation” is transferred from New data table to Active data table
- And then to Change log table. In change log table you can have the changed data or corrected data.
Note: the data in Change log table is redundantly stored and can be deleted after the records have been activated.
Following steps can be used to create Standard DSO,
· Right click on InfoArea.
· Enter the Technical Name.
· Click on the “Create” button.
Configure the following settings in the DSO,
· SID Generation upon Activation :Generated the Surrogate ID (SID) for each master data value, when this option is checked.
· Set Quality Status to “OK” Automatically:· Activate Data Automatically: DSO activation is automated by using this setting.
· PSA receives data unchanged to the Source system
· Data is posted to Corporate memory write –optimized DSO from pass thru write-optimized DSO
· It is used for initial staging of source system data.
· Data loads can be faster since it does not have the separate activation step.
· Every record has a technical key and hence aggregation of records is not possible. New records are inserted every time.
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