Dispite effective designs that aim to achieve good data, however, some anomolies are introduced during use of the data. Discuss attribute semantics as an informal measure of goodne
Need help with this assignment?Get an original answer from a qualified tutor — from $10/page.
Get it written →Dispite effective designs that aim to achieve good data, however, some anomolies are introduced during use of the data.
- Discuss attribute semantics as an informal measure of goodness for a relational schema – that is, ways that attributes and be constructed during conception to achieve good data. Illustrate with example
- Discuss Insertion, Deletion, and modification anomolies. Why are they considered bad? Illustrate with examples.
- Why should NULLs in a relation be avoided as much as possible? Discuss the problem of spurious tuples and how to prevent it.
Get a plagiarism-free answer to this question
Send us your instructions and we’ll match you with the best writer in your subject.
- 100% human-written, zero AI
- Turnitin report included
- Confidential — we never share your data
- Free revisions & refunds