1. Discuss attribute semantics as an informal measure of goodness for a relation schema.
...
Computers and Technology, 18.08.2021 21:00 mlopezmanny5722
1. Discuss attribute semantics as an informal measure of goodness for a relation schema.
2. Discuss insertion, deletion, and modification anomalies. Why are they considered bad? Illustrate with examples.
3. Define fourth normal form. When is it violated? When is it typically applicable?
4. Define join dependency and fifth normal form.
5. Why is 5NF also called project-join normal form (PJNF)?
6. Why do practical database designs typically aim for BCNF and not aim for higher normal forms?
Answers: 2
Another question on Computers and Technology
Computers and Technology, 22.06.2019 08:40
What are the three parts to physical security standards for various types of army equipment and the risk level
Answers: 2
Computers and Technology, 23.06.2019 02:00
Which of the following is not a source of sustainable raw materials? a) coal mine b) flick of sheep c) cotton plantation d) line forest.
Answers: 2
Computers and Technology, 23.06.2019 13:30
Spoons are designed to be used for: spring hammering. applying body filler. identifying high and low spots. sanding highly formed areas.
Answers: 3
Computers and Technology, 23.06.2019 21:40
language consists of basic components, and they are called a. 3; mental images, concepts, and speech b. 2; language acquisition and linguistic relativity c. 3; heuristics, algorithms, and analogies d. 4; phonemes, morphemes, syntax, and semantics e. 2; words and grammar
Answers: 3
You know the right answer?
Questions
Social Studies, 09.01.2020 03:31
Mathematics, 09.01.2020 03:31
History, 09.01.2020 03:31
History, 09.01.2020 03:31
Mathematics, 09.01.2020 03:31
Mathematics, 09.01.2020 03:31
Mathematics, 09.01.2020 03:31
Social Studies, 09.01.2020 03:31
History, 09.01.2020 03:31
