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SSRS Interview Question:
Define Identity and uniqueidentifier property of Column?
Submitted by: AdministratorIdentity Column
► Column with identity property contains unique system generated value in the table.
► Column with identity property is similar to AutoNumber field in MS Access.
► You can set start and increment value while setting column property to identity.
► Column with identity property contains unique values within the table.
Uniqueidentifier, GUID
► The column with uniqueidentifier property contains globally unique data.
► SQL server uses uniqueidentifier property for merge replication.
► Same like Identity Column, SQL server supports uniqueidentifier column that also contains system generated value.
► A column or local variable of uniqueidentifier data type can be initialized using NEWID function.
Submitted by: Administrator
► Column with identity property contains unique system generated value in the table.
► Column with identity property is similar to AutoNumber field in MS Access.
► You can set start and increment value while setting column property to identity.
► Column with identity property contains unique values within the table.
Uniqueidentifier, GUID
► The column with uniqueidentifier property contains globally unique data.
► SQL server uses uniqueidentifier property for merge replication.
► Same like Identity Column, SQL server supports uniqueidentifier column that also contains system generated value.
► A column or local variable of uniqueidentifier data type can be initialized using NEWID function.
Submitted by: Administrator
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