COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To edit a table name
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To change the name of a field
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To change the contents of records in a table
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To change the structure of a table
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Detailed explanation-1: -The UPDATE statement is used to modify the existing records in a table.
Detailed explanation-2: -The UPDATE command in SQL is used to modify or change the existing records in a table. If we want to update a particular value, we use the WHERE clause along with the UPDATE clause. If you do not use the WHERE clause, all the rows will be affected.
Detailed explanation-3: -The ALTER TABLE statement is used to add, delete, or modify columns in an existing table. The ALTER TABLE statement is also used to add and drop various constraints on an existing table.
Detailed explanation-4: -It is crucial for datasets in database systems to stay up-to-date with the ever-changing, real-world data, and the UPDATE command in SQL enables users to do exactly that. You never have to worry about an outdated dataset.