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Reference: https://www.comptia.org/certifications/datasys
CompTIA DataSys+ Certification Sample Questions:
Which of the following is the best way to migrate a large data load from one table to another, considering total time and blocking?
- A. Split the load size in half and run simultaneously.
- B. Batch large loads into one transaction.
- C. Split the load size into many transactions.
- D. Batch into small loads and run in parallel.
Correct Answer: D 🗳️
Explanation: Only visible for TestValid members. You can sign-up / login (it's free).
(An IT manager needs to create a workflow for a new application. Which of the following tools should the manager use to facilitate the creation of a workflow?)
- A. UML
- B. ERD
- C. ORM
- D. ETL
Correct Answer: A 🗳️
Explanation: Only visible for TestValid members. You can sign-up / login (it's free).
Which of the following is used to write SQL queries in various programming languages?
- A. Object-relational mapping
- B. Excel
- C. Normalization
- D. Indexing
Correct Answer: A 🗳️
Explanation: Only visible for TestValid members. You can sign-up / login (it's free).
(A database administrator wants to create a database that does not have a predefined schema. Which of the following tools should the administrator use to create this type of database? Select two.)
- A. SQL Server
- B. PostgreSQL
- C. MariaDB
- D. MongoDB
- E. MySQL
- F. Cosmos
Correct Answer: D,F 🗳️
Explanation: Only visible for TestValid members. You can sign-up / login (it's free).
A database administrator manages a database server that is running low on disk space. A lot of backup files are stored on the server's disks.
Which of the following is the best action for the administrator to take?
- A. Delete all the backup files containing data that is rated as classified.
- B. Delete all the backup files that are not required by the backup retention policy.
- C. Move all the backup files to external disks.
- D. Delete all the backup files except for the most recent one.
Correct Answer: B 🗳️
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