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Database Systems Practice Test 53

Java Database Connectivity (JDBC) Quiz Questions and Answers PDF Download - 53

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Java Database Connectivity (JDBC) Questions and Answers PDF Download: MCQ 53

MCQ 261:

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
MCQ 262:

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

  1. Superset key
  2. Superkey
  3. Primary key
  4. Unique key
MCQ 263:

Scalar subqueries are also useful in SQL

  1. Insertion statements
  2. Deletion statement
  3. Update statements
  4. Retrieval statement
MCQ 264:

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

  1. 0
  2. 1
  3. Undefined value
  4. Null value
MCQ 265:

ODBC defines the types

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

Database Systems Exam Prep Tests

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Java Database Connectivity (JDBC) App (Android & iOS)

Java Database Connectivity (JDBC) App (Android & iOS)

DataBase Management System (MCS) App (Android & iOS)

DataBase Management System (MCS) App (iOS & Android)

ICT App (Android & iOS)

ICT App (Android & iOS)

Electronic Devices App (Android & iOS)

Electronic Devices App (iOS & Android)