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MySQL Subqueries and Stored Procedures Quiz

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MySQL Subqueries and Stored Procedures Quiz

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Questions and Answers

What characterizes a SINGLE ROW SUBQUERY in MySQL?

Returns multiple rows and uses multiple-row comparison operators

Compares more than one column between the parent query

Returns only one row and uses single-row comparison operators (correct)

Nests a procedure within another procedure

What is the main advantage of using STORED PROCEDURES in MySQL?

Improves security by reducing exposure of database logic (correct)

Reduces the need for a WHERE clause

Makes the stored procedures less portable

Increases database traffic

How are IN parameters used in MySQL stored procedures?

IN parameters do not require any value to be passed

IN parameters can return multiple rows

IN parameters cannot be modified inside the stored procedure

The calling program must pass an argument to the stored procedure (correct)

What is the purpose of OUT parameters in MySQL stored procedures?

To change the value of the OUT parameter inside the stored procedure Signup and view all the answers

Which type of subquery in MySQL compares more than one column between the parent query?

Multiple-column subqueries Signup and view all the answers

What does a combination of INOUT parameters mean in MySQL stored procedures?

The stored procedure can modify the INOUT parameter and pass the new value back Signup and view all the answers

Which type of maintenance aims to enhance the system by improving its functionality, performance, or user experience?

Perfective Maintenance Signup and view all the answers

In the Waterfall model of SDLC, what happens once a phase is completed?

The next phase begins Signup and view all the answers

Which model emphasizes iterative and incremental development, flexibility, collaboration, and customer feedback?

Agile Model Signup and view all the answers

What distinguishes a Stored Procedure from a View in SQL?

Stored Procedures allow modification to tables Signup and view all the answers

Which SDLC phase involves coding, testing, and debugging of the system?

Implementation Signup and view all the answers

What is the primary difference between a Trigger and a Stored Procedure in SQL?

Triggers respond automatically to specified events Signup and view all the answers