System Objects -- Sql Server

Contains a row for each user-defined, schema-scoped object that is created within a database.

Note
sys.objects does not show DDL triggers, because they are not schema-scoped. All triggers, both DML and DDL, are found in sys.triggers. sys.triggers supports a mixture of name-scoping rules for the various kinds of triggers.
Column name	Data type	Description
name	sysname	Object name.
object_id	int	Object identification number. Is unique within a database.
principal_id	int	ID of the individual owner, if different from the schema owner. By default, schema-contained objects are owned by the schema owner. However, an alternate owner can be specified by using the ALTER AUTHORIZATION statement to change ownership. Is NULL if there is no alternate individual owner. Is NULL if the object type is one of the following: C = CHECK constraint D = DEFAULT (constraint or stand-alone) F = FOREIGN KEY constraint PK = PRIMARY KEY constraint R = Rule (old-style, stand-alone) TA = Assembly (CLR-integration) trigger TR = SQL trigger UQ = UNIQUE constraint
schema_id	int	ID of the schema that the object is contained in. Schema-scoped system objects are always contained in the sys or INFORMATION_SCHEMA schemas.
parent_object_id	int	ID of the object to which this object belongs. 0 = Not a child object.
type	char(2)	Object type: AF = Aggregate function (CLR) C = CHECK constraint D = DEFAULT (constraint or stand-alone) F = FOREIGN KEY constraint FN = SQL scalar function FS = Assembly (CLR) scalar-function FT = Assembly (CLR) table-valued function IF = SQL inline table-valued function IT = Internal table P = SQL Stored Procedure PC = Assembly (CLR) stored-procedure PG = Plan guide PK = PRIMARY KEY constraint R = Rule (old-style, stand-alone) RF = Replication-filter-procedure S = System base table SN = Synonym SO = Sequence object SQ = Service queue TA = Assembly (CLR) DML trigger TF = SQL table-valued-function TR = SQL DML trigger TT = Table type U = Table (user-defined) UQ = UNIQUE constraint V = View X = Extended stored procedure
type_desc	nvarchar(60)	Description of the object type: AGGREGATE_FUNCTION CHECK_CONSTRAINT CLR_SCALAR_FUNCTION CLR_STORED_PROCEDURE CLR_TABLE_VALUED_FUNCTION CLR_TRIGGER DEFAULT_CONSTRAINT EXTENDED_STORED_PROCEDURE FOREIGN_KEY_CONSTRAINT INTERNAL_TABLE PLAN_GUIDE PRIMARY_KEY_CONSTRAINT REPLICATION_FILTER_PROCEDURE RULE SEQUENCE_OBJECT SERVICE_QUEUE SQL_INLINE_TABLE_VALUED_FUNCTION SQL_SCALAR_FUNCTION SQL_STORED_PROCEDURE SQL_TABLE_VALUED_FUNCTION SQL_TRIGGER SYNONYM SYSTEM_TABLE TABLE_TYPE UNIQUE_CONSTRAINT USER_TABLE VIEW
create_date	datetime	Date the object was created.
modify_date	datetime	Date the object was last modified by using an ALTER statement. If the object is a table or a view, modify_date also changes when an index on the table or view is created or altered.
is_ms_shipped	bit	Object is created by an internal SQL Server component.
is_published	bit	Object is published.
is_schema_published	bit	Only the schema of the object is published.

Remarks

You can apply the OBJECT_ID, OBJECT_NAME, and OBJECTPROPERTY () built-in functions to the objects shown in sys.objects.

There is a version of this view with the same schema, called sys.system_objects, that shows system objects. There is another view called sys.all_objects that shows both system and user objects. All three catalog views have the same structure.

In this version of SQL Server, an extended index, such as an XML index or spatial index, is considered an internal table in sys.objects (type = IT and type_desc = INTERNAL_TABLE). For an 

extended index: 

name is the internal name of the index table.

parent_object_id is the object_id of the base table.

is_ms_shipped, is_published and is_schema_published columns are set to 0.

• name is the internal name of the index table.
• parent_object_id is the object_id of the base table.
• is_ms_shipped, is_published and is_schema_published columns are set to 0.