1		13
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	4										14
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7
		8
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														11
							12

Across

1. A concurrency control protocol where a transaction acquires all its required locks before starting execution and releases them all at the end. It enforces serializability.

2. Ensuring that the execution of multiple transactions produces the same result as if they were executed sequentially.

3. The accuracy, consistency, and reliability of data stored in a database, ensuring it is valid and trustworthy.

4. A type of database that stores data across multiple computers or servers, allowing for improved performance, fault tolerance, and scalability.

5. The property that ensures that committed transactions survive permanent system failures.

6. The process of performing multiple database operations as a single unit of work, ensuring consistency and integrity of data.

7. A system that collects, processes, stores, analyzes, and disseminates information for a specific purpose.

8. An interface that allows users to interact with software through visual indicators and elements.

9. The process of selecting the most efficient execution plan for a query in a database management system.

10. Tools that allow users to build queries using graphical elements rather than text-based commands.

11. A set of properties that guarantee that database transactions are processed reliably.

12. The ability to recover a database to a specific moment in time using the transaction log.

Down

13. A specific action carried out on a database.

14. The practice of implementing measures and protocols to protect the database system from unauthorized access, data breaches, and other security threats.

15. A type of database that stores data as objects, which have their own properties and behaviors.

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