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Java Database Connectivity (JDBC) Trivia Questions and Answers PDF Download eBook p. 53

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Java Database Connectivity (JDBC) Questions and Answers PDF Download eBook

Java Database Connectivity (JDBC) Quiz

MCQ: The first step in accessing a database from a Java program is to

  1. Open a connection
  2. Open a query
  3. Open a statement
  4. Open a database

A

DBMS Keys Quiz

MCQ: We are often interested in superkeys for which no proper subset is a

  1. Superset key
  2. Superkey
  3. Primary key
  4. Unique key

B

Modification of Database Quiz

MCQ: Scalar subqueries are also useful in SQL

  1. Insertion statements
  2. Deletion statement
  3. Update statements
  4. Retrieval statement

C

Aggregate Functions Quiz

MCQ: The aggregate operations, when an empty collection is applied on the function, return a

  1. 0
  2. 1
  3. Undefined value
  4. Null value

D

Open Database Connectivity (ODBC) Quiz

MCQ: ODBC defines the types

  1. HENV
  2. HDBC
  3. RETCODE
  4. All of the Above

D