DBMS-Relational Query Languages Questions and Answers
Relational Query Languages questions with answers test a candidate’s command over SQL and relational algebra, essential in database management system (DBMS) exams. From SELECT queries to JOIN operations and set-based functions, these concepts are heavily emphasized in placement tests by TCS, Wipro, and Infosys. This section offers detailed programming questions and answers with SQL query explanations, ensuring that learners understand both syntax and logic. Practicing these DBMS query-based MCQs strengthens problem-solving and prepares you for database-related technical interviews and coding challenges.
DBMS-Relational Query Languages
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45 questions
3. Query-ByExample (QBE) is a two-dimentional domain calculus language.
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4. Query-ByExample (QBE) is a two-dimentional domain calculus language.
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5. QBE was originally developed by M.M. Zloof at IBM'S T.J. Waston Research Centre.
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6. QBE represents a visual approach for accessing information in a database through the use of query template.
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7. The QBE make-table action query is an action query as it perform an action on existing table or tables to create a new table.
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8. QBE difers from SQL in that the user does not have to specify a structured query explicity.
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9. In QBE, user does not have to remember the names of the attributes or relations, because they are displayed as part of the template.
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10. The delete action query of QBE deletes one or more than one records from a table or more than one table.
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