Computer Science · Database Management Systems
Consider E.F. Codd's 12 rules for a true relational database management system (RDBMS). Which of the following statements is/are TRUE? 1. Information Rule: All data must be represented logically as values in tables. 2. Guaranteed Access Rule: Every atomic data item is logically accessible by combining table name, primary key, and column name. 3. Physical Data Independence: Changing storage media or file organization must require changes in application programs.
- 1Only 1
- 22 and 3
- 31 and 2✓
- 41 and 3
Correct answer
1 and 2
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