A composite key is a combination of two or more columns in a table that is used to uniquely identify each record in table. When the columns are combined uniqueness but when it taken individually it doesn't guarantee uniqueness.

You can run the following, which will generate a set of ALTER SCHEMA statements for Table and procedure:

Primary key is used to uniquely identify the records in a SQL Table. Here we can say, primary key is a value of a column that value is unique in the table. Primary key don't accept any null value. Primary Key is also play an important role to create relationship between two tables.

The main functionality of cursor is to retrieve data one row at a time. Means cursor provide a functionality of looping in SQL Server.

Unique Key is used to uniquely identify the row in SQL Table. In Unique Key column only one value can be NULL. We can create more than one Unique Key.

While Sai Teja Varanasi, a student of Narayana Group of Institutions, was declared as state topper, Yeshwanth Sai and Venkata Krishna secured second and third rank respectively.

MUMBAI: Mumbai University was forced to postpone TYBA and TYB Com exams scheduled on Tuesday for almost 8,000 distance education students after they reported technical glitches. Most students from the university's Institute of Distance and Open Learning (IDOL) could not access the question papers on the link provided to them. A fresh date will be announced soon.

The undergraduate admissions at Delhi University will begin with the release of the first cutoff list on October 12. In a notification on the admission dates for merit- and entrance-based admissions, DU has also announced that the next academic session will begin on November 18.

ALIGARH: Aligarh Muslim University students have demanded a reinvestigation into the December 15 campus violence during an anti-CAA protest and a review of the cases filed against some of them in a week after that, saying they were booked on "flippant grounds".

Tamil Nadu are permitted to come to their schools on a voluntary basis by following the Standard Operating Procedure to prevent spread of coronavirus, the state government said on Thursday.