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Database Systems MCQs – Mock Test 312

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The Relational Databases MCQ with Answers PDF (Relational Databases Multiple Choice Questions (MCQs) PDF e-Book) download Ch. 13-312 to learn Database Systems Practice Tests. Learn Introduction to DBMS Test PDF, Relational Databases Multiple Choice Questions (MCQ Quiz) for computer and information science. Download Database Systems MCQs App: Free Relational Databases App to learn relational algebra, history of database systems, recursive views, relational databases test prep to study online certification courses.

The MCQ: Most commercial relational database systems employ the language; "Relational Databases" App (Free Android & iOS) with answers: java, c++, db2, and sql for computer and information science. Practice Introduction to DBMS Questions and Answers, Google eBook to download free chapter for 2 year computer science degree.

Relational Databases MCQ – Mock Test 312 PDF Download

MCQ: 1556

Most commercial relational database systems employ the language

  1. C++
  2. Java
  3. SQL
  4. DB2
MCQ: 1557

The first subquery of the recursive view that is non-recursive is called as the

  1. Absolute query
  2. Base query
  3. Nonrecurring query
  4. General query
MCQ: 1558

Magnetic tapes were developed for data storage over the period

  1. 1940s-1950s
  2. 1950s-1960s
  3. 1960s-1965s
  4. 1960s-1970s
MCQ: 1559

In a selection statement, the predicate appears as a subscript to

  1. epsilon
  2. zeta
  3. sigma
  4. delta
MCQ: 1560

The command that all instructors with salary over $100,000 receive a 3 percent raise, would be written as

  1. update instructor
    set salary=salary * 1.03
    where salary > 100000;
  2. update instructor
    set salary=salary * 1.03
    where salary <>=100000;
  3. update in instructor
    set salary=salary * 1.03
    where salary >=100000;
  4. update into instructor
    set salary=salary * 1.03
    where salary >=100000;

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