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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51. The first commercial REBMS was IBM'S DB2

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52. SEQUEL and SQL are the same.

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53. SQL is a relational query language.

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54. SQL is essentially not a free-format language.

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55. SQL statement can be invoked either interactively in a terminal session but cannot be embedded in application programs.

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56. In SQL statements can be invoked either interactively in a terminal session but cannot be embedded in programming languages

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57. In SQL statements can be invoked either interactively in a terminal session but cannot be embedded in programming languages

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58. In SQL statements can be invoked either interactively in a terminal session but cannot be embedded in programming languages

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59. HAVING clause is equivalent of WHERE clause and is used to specify the search criteria or search condition when GROUP BY clause is specified.

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60. HAVING clause is used to eliminate group s just as WHERE is used to eliminate rows.

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