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Results tagged with sql
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user 28373
Structured Query Language (SQL) is a language for managing data in relational database management systems. This tag is for general SQL programming questions; it is not for Microsoft SQL Server (for this, use the sql-server tag), nor does it refer to specific dialects of SQL on its own.
0
votes
Why is prefixing column names considered bad practice?
The basic structure is:
[Object] [Qualifier] Property RepresentationTerm
with delimiters between the elements: SQL doesn't play nice with spaces in column names and underscore works well visually. … On implementation e.g. in SQL, some folk like to omit the Object, Qualifier and Property sub-elements when the table name provides context e.g. person_first_name becomes first_name in the Person table …
- 121
2
votes
Should a primary key be immutable?
It is not bad practice to have a key whose values may change.
The properties of a good key include stability. Immutability is ideal but not a prerequisite. Introducing an artificial key for the sake …
- 121