Relational Data Model
CBSE Class 12 Computer Science · every board question from this chapter, 2026
- A table has two candidate keys, one of which is chosen as the primary key. How many alternate keys does this table have?2026
- Which of the following SQL command can change the degree of the existing relation?2026
- A relation in MySQL database consists of 2 tuples and 3 attributes. If 2 attributes are deleted and 4 tuples are added, what will…2026
- Assertion: The PRIMARY KEY constraint in SQL ensures that each value in the column(s) is unique and cannot be NULL. Reason (R):…2026
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