The new sequence object introduced in SQL Server 2012 has several advantages over IDENTITY columns. We can use these to generate lists of different types of objects that can then be used for reporting or further research. SQL Data Type is an attribute that specifies the type of data of any object. Object Relational Tutorial (1.x API) SQL Expression Language Tutorial (1.x API) System views provide us with information about tables, schemas, columns, and other objects in SQL Server. Declare @baseObjects Nvarchar(1000) = '[Schema].[Table],[Schema].[View],[Schema].[Function],[Schema]. A constructed type is specified using one of SQL's data type constructors, ARRAY, REF, and ROW. You can choose a data type for a table column based on your requirement. However, certain reference types aren't lightweight enough to work as value types, but nevertheless have value semantics. About sys.types; In SQL Server, details regarding a specific table column (e.g., column name, column id, column data type, column constraints) can be retrieved by joining system tables such as sys.tables, sys.columns, and sys.types. I am using AdventureWorks2012 as a sample database. The state is represented by the values of the object's attributes, and the behavior is defined by the methods acting on the state of the object. It also makes data migrations from non-Microsoft database platforms very convenient. SQL Data Types. Array types are the only examples of constructed types known generically as collection types. For our work here, we will use system views to collect a list of all identity columns in a given database. The sys.dm_sql_referenced_entities Dynamic Management Function (DMF) returns every user-defined entity that is referenced by name in the definition of the referencing database object that you specify. In general we expect Equals() for reference types to do an identity comparison (to check whether the objects actually are the same in memory). The object-oriented paradigm is illustrated below: Objects and Identity The following figure shows object with state and behavior. For reference types, as discussed above, the situation is trickier. However, some of the of the benefits such as updating of sequence object values may come at greater cost – such as data integrity and unique constraint violations. I saw this post to identify all the objects that reference a particular synonym and used the base logic in the answer in a recursive CTE to identify all the objects related to a comma-delimited list of the objects within the top level query being executed.. Each column in a database table is required to have a name and a data type. Each column, variable and expression has a related data type in SQL. There is a unique object identifier OID to identify the object. 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