Correct Answer: Correct answer is: (C) ALTER.
Exam Relevance: SQL Server Certification, Oracle Certification, MySQL Certification
Difficulty: Easy
Concept notes: The SQL command "ALTER" is used to modify the structure of a database, such as adding, deleting, or modifying columns in a table.
Common Mistakes: Students often confuse the "ALTER" command with the "UPDATE" command, which is used to modify the data within a table, not the structure.
Explanations: The "ALTER" command is specifically designed to change the structure of a database, such as adding or removing columns, changing data types, or renaming tables. The other options are incorrect because: - "UPDATE" is used to modify the data within a table, not the structure. - "CHANGE" is not a standard SQL command for modifying database structure. - "EDIT" is not a standard SQL command.
Option Analysis: - Option A: UPDATE is used to modify the data within a table, not the structure.
- Option B: CHANGE is not a standard SQL command for modifying database structure.
- Option C: ALTER is the correct command for modifying the structure of a database.
- Option D: EDIT is not a standard SQL command.
Mnemonic: A - Alter, Add, Adjust (AAA)
The MCQ is quite entertaining and will help in increasing knowledge also.
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