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A primary key is a critical concept in relational databases, ensuring that each record within a table can be uniquely identified. The primary key has the following key characteristics: • Uniqueness: Each value of a primary key must be unique across the entire table. No two rows can have the same primary key value. • Non-nullable: A primary key must always have a value; it cannot be null. This is essential for maintaining the integrity of the database as it ensures that every record can be uniquely identified.
Professor Deepak Dhar has become the first Indian to be awarded the Boltzmann Medal. He shares the medal with John J Hoefield of Princeton University. I...
What was India's current account deficit (CAD) as a percentage of GDP in Q3FY23?
Which of the following private sector finance companies has launched the initiative ‘Har Time EMI On Time'?
The Tropic of Cancer passes through how many Indian states?
What does the crest of Project 15B stealth guided missile destroyer Yard 12706 (Imphal) unveiled by Raksha Mantri Rajnath Singh symbolize?
Spice Money, the rural fintech company, announced building a digital financial services platform for consumers from rural and semi-urban India in partne...
What significant role change occurred at Paytm recently?
Which of the following world organisation release the report titled “Migration and Development Brief 36: May 2022”?
Consider the following Statements and choose the option with wrong Statement(s).
I- PM SVANidhi is a Centrally Sponsored Scheme.
II- It wa...
Mount St. Helens is an 'active stratovolcano' located in