Say I had three tables: Accommodati开发者_运维技巧on, Train Stations and Airports. Would I have address columns in each table or an address table that is referenced by the other tables? Is there such
If I have one table which has a City fie开发者_如何学编程ld and as expected this field will repeat itself so only separate it to another table can be ok for normalizing concepts? I mean separated tabl
i have taken over a database that stores fitness information and we were having a debate about a certain table and whether it should stay as one table or get broken up into three tables.
CREATE TABLE Phone ( phoneID - PK . . . ); CREATE TABLE PhoneDetail ( phoneDetailID - PK phoneID - FK points to Phone
As it currently stands, this question is not a good fit for our Q&A 开发者_高级运维format. We expect answers to be supported by facts, references,or expertise, but this question will likely so
I\'m storing data on baseball statistics and would like to do so with 开发者_如何学运维three tables: players, battingStats, and pitchingStats. For the purpose of the question, each player will have ba
Suppose I have two tables on a database, T10开发者_JAVA百科 and T11, having 10 and 11 columns, respectively, where 10 of the columns are exactly the same on both.
I have three tables: Post, Attachment, and Media. Posts have Attachments, an开发者_运维知识库d Attachments have Media.
I understand the concept of database normalization, but always have a hard time explaining it in plain English - especially for a job interview.I have read the wikipedia post, but still find it hard t
Is database normalization still \"the thing?\" When I studied during a databases course 开发者_如何学运维we were taught all levels of normalization and were said that we must always do it.
加载中,请稍侯......