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Database Systems Practice Test 53

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

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The Quiz: The first step in accessing a database from a Java program is to "Java Database Connectivity (JDBC)" App Download [Free] with answers: open a query, open a connection, open a database, and open a statement for online bachelor's degree computer science. Learn Advanced SQL Questions and Answers, Apple e-Book to download free sample to learn software engineering courses.

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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