LPI
010-100 · Question #55
010-100 Question #55: Real Exam Question with Answer & Explanation
The correct answer is A. PostgreSQL C. MySQL. PostgreSQL and MySQL are both widely used open source relational database management systems (RDBMS) that use SQL and support ACID transactions.
Question
Which of the following applications are popular Open Source relational database systems? (Select TWO correct answers)
Options
- APostgreSQL
- BNoSQL
- CMySQL
- DDB/2
- EMongoDB
Explanation
PostgreSQL and MySQL are both widely used open source relational database management systems (RDBMS) that use SQL and support ACID transactions.
Common mistakes.
- B. NoSQL is not a database product but a category describing non-relational databases that do not primarily use SQL or a tabular schema.
- D. DB/2 (IBM Db2) is a proprietary relational database product from IBM, not an open source system.
- E. MongoDB is an open source database, but it is a document-oriented NoSQL database, not a relational database system.
Concept tested. Identifying open source relational database management systems
Reference. https://www.postgresql.org/about/
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