sys.objects object catalog view contains a row for each user-defined, schema-scoped object that is created within a database. You can retrieve any user defined object details by querying sys.objects database.
Let us see one example of sys.objects database usage. You can run following query to retrieve all the information regarding name of foreign key, name of the table it FK belongs and the schema owner name of table.
USE AdventureWorks;
GO
SELECT name AS ObjectName,
OBJECT_NAME(schema_id) SchemaName,
OBJECT_NAME(parent_object_id) ParentObjectName, name, *
FROM sys.objects
WHERE type = 'F'
GO
You can use any of the following in your WHERE clause and retrieve necessary information.
Object type:
AF = Aggregate function (CLR)
C = CHECK constraint
D = DEFAULT (constraint or stand-alone)
F = FOREIGN KEY constraint
PK = PRIMARY KEY constraint
P = SQL stored procedure
PC = Assembly (CLR) stored procedure
FN = SQL scalar function
FS = Assembly (CLR) scalar function
FT = Assembly (CLR) table-valued function
R = Rule (old-style, stand-alone)
RF = Replication-filter-procedure
S = System base table
SN = Synonym
SQ = Service queue
TA = Assembly (CLR) DML trigger
TR = SQL DML trigger
IF = SQL inline table-valued function
TF = SQL table-valued-function
U = Table (user-defined)
UQ = UNIQUE constraint
V = View
X = Extended stored procedure
IT = Internal table
Reference : Pinal Dave (https://darkslategrey-bat-805937.hostingersite.com) , BOL – sys.objects
