Number 2

A visually appealing illustration depicting a database with various database-related icons around it, such as tables, keys, locks for security, and charts, in a modern and tech-savvy style.

Database Mastery Quiz

Test your knowledge and understanding of database concepts with this engaging quiz. Designed for database enthusiasts and professionals alike, this quiz covers essential topics such as procedures, index-by tables, data security, Codd’s rules, and more.

Challenge yourself and see how you stack up against others in the field! Key highlights include:

  • 5 insightful questions
  • Multiple-choice format to assess your understanding
  • Instant feedback on your answers
5 Questions1 MinutesCreated by QueryMaster42
1. Which of the following statements about procedures are true:
Can contain OUT parameters
Can't contain COMMIT or ROLLBACK
Are always part of a package
Can be executed using CALL
Can't be executed using EXEC
2. Which of the following statements about index-by tables are true:
Are unbounded
Can be sparse
Can be created at schema level
The subscript type can be a string
Can be processed outside PL/SQL blocks
3. Data security can be assured using:
Backup/recovery
Semantic Constraints
Encryption
Views
Concurrent access
4. Which of the following statements are true according to Codd’s rules?
Some information in the database should not be represented as relational tables
The system must support at least one non-relational language
The system should isolate all application programs (and end user accesses) from the logical structure of the database.
Low-level (record-at-a-time) interfaces can bypass relational security or integrity constraints of the system.
All data stored in the database must be logically addressable by specifying the relation, the related attribute(s), and the primary key-value
What will select first_name,check_salary_n(employee_id,5000) from employees return?
An exception
A compilation-time error
Always NULL
-1, 1 or NULL
Pwp jos
-1, 1 or NULL for each employee
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