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Java PreparedStatement and ExecuteUpdate Quiz

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Java PreparedStatement and ExecuteUpdate Quiz

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Questions and Answers

What is a benefit of using a PreparedStatement over a generic Statement?

It is used to execute precompiled queries multiple times without recompiling (correct)

It can execute multiple SQL statements at once

It does not support setter and getter methods

It compiles the SQL statement every time it is executed

What does the query optimizer do before returning the results?

Validates the database schema

Generates pseudocode for query execution

Evaluates different plans for executing the query (correct)

Checks for syntax errors in the SQL statement

When utilizing a PreparedStatement, what is necessary before executing it?

Compile the SQL statement

Optimize the SQL query

Create the PreparedStatement object (correct)

Generate pseudo code

What is a disadvantage of not using a PreparedStatement for executing SQL statements?

Repeated compilation of SQL statements (D) Signup and view all the answers

Which interface extends the Statement interface to provide additional functionality in Java's JDBC?

PreparedStatement interface (C) Signup and view all the answers

What process is time-consuming if the same SQL statements are passed without using a PreparedStatement?

Compilation of SQL statements (A) Signup and view all the answers

In JDBC, how does PreparedStatement differ from Statement?

PreparedStatement represents and executes only one SQL statement, whereas Statement does not have this limitation. (B) Signup and view all the answers

What happens if the same SQL statements are passed when using a PreparedStatement?

The SQL statements are compiled again and again, consuming time (A) Signup and view all the answers

What features does a PreparedStatement offer over a generic Statement in Java's JDBC?

Use of setter and getter methods for updating SQL types (D) Signup and view all the answers

What is required to be done before executing a precompiled statement using PreparedStatement?

Create a PreparedStatement object with necessary values supplied (C) Signup and view all the answers