DBMS-Relational Algebra and Calculus Questions and Answers

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Relational Algebra and Relational Calculus form the theoretical foundation of DBMS programming questions and answers frequently asked in technical interviews and campus placement exams such as TCS, Infosys, and Accenture. These topics explain how queries are represented and optimized in databases. By understanding operations like selection, projection, join, and division, you can effectively translate queries into SQL. Practicing DBMS MCQs and programming interview questions with answers improves your understanding of database logic, query design, and relational schema concepts essential for technical placements.

DBMS-Relational Algebra and Calculus

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1. In 1980 Dr. E.F. Codd was working with Oracle Corporation.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

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2. DB2, System R, and ORACLE are examples of relational DBMS.

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3. In the RDBMS terminology, a table is called a relation.

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4. The relational model is based on the core concept of relation.

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5. Cardinality of a table means the number of columns in the table.

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6. In the RDBMS terminology, an attribute means a column or a filed.

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7. A domain is a set of atomic values

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8. Data values are assumed to be atomic, which means that they have no internal structure as far as the model is concerned.

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9. A table cannot have more than one attribute, which can uniquely identify the rows.

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10. A candidate key is an attribute that can uniquely identify a row in a table.

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