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Java Database Connectivity (JDBC) Quiz Questions and Answers 354 PDF Download

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Quiz on Java Database Connectivity (JDBC) Worksheet 354Quiz PDF Download

Java Database Connectivity (JDBC) Quiz

MCQ: In accessing a database from a Java program is to, opening a connection is said to be the

  1. Zeroth step
  2. First step
  3. Second step
  4. Last step


Advanced Aggregation Features Quiz

MCQ: In a set presence of null values can complex definition of

  1. rank
  2. aggregates
  3. row_number
  4. set difference


Set Operations Quiz

MCQ: SQL treats result of any comparison involving a null value, as a

  1. Null value
  2. 0
  3. Unknown
  4. True/False


Relational Algebra Quiz

MCQ: We can avoid loss of information by performing

  1. Natural join
  2. Outer join
  3. Full join
  4. Inner join


Nested Subqueries Quiz

MCQ: Type of a scalar subquery result is still a relation, even if it contains a

  1. Single instance
  2. Single tuple
  3. Single attribute
  4. Single aggregate