Question

I want set two primary keys for a single table and in that one should be a foreign key in SQLserver.

Answer 1

What you are most likely looking for is a composite primary key, where two or more keys are combined to make up the primary key.

CREATE TABLE myTable (
    key1 INTEGER NOT NULL, 
    key2 INTEGER NOT NULL, 
    PRIMARY KEY (key1, key2), 
    FOREIGN KEY (key2) REFERENCES otherTable (anotherKey),
    anotherField CHAR(100) NULL
)

Or, using the table designer: click the first key, hold down Ctrl and click the second key, finally click the key button.