September 2021
Beginner
624 pages
18h 4m
English
Content preview from SQL in 24 Hours, Sams Teach Yourself, 7th Edition
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Appendix C
Answers to Quizzes and Exercises
Hour 1, “Understanding the Relational Database and SQL”
Quiz
1. What does the acronym SQL stand for?
Answer: Structured Query Language
2. What is a schema? Give an example.
Answer: A schema is a collection of database objects owned by a single database user that can be made available to other users in the database. The tables in the
BIRDSdatabase are an example of a schema.3. How do logical and physical components within a relational database differ? How are they related?
Answer: Logical components are used to conceive and model a database (entities and attributes). Physical components are the actual objects, such as tables, that are created based on the database design.
4. What keys are used ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.