normalization

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select items that have multiple matches in a normalized table

I have a table that stores a bunch of objects.Each object can have many colors which are stored in a normalized table connected by the object_id.[详细]

2023-02-27 22:06 分类：问答
Design Normal Form in sql server

I ha开发者_Python百科ve 2 table (FirstTable & SecondTable). My FirstTable is header table and SecondTable is detail table, but FirstTable has complex primary key. How I can have a reference in my[详细]

2023-02-27 05:32 分类：问答
Comment system design

Here is my current comment system design: I\'m developing it for a website that has lots of areas, blogs, tutorials, manuals etc etc.As supposed to developing a separate comment table for each (tbl[详细]

2023-02-26 02:12 分类：问答
Storing user profile data in the users table or separate profile table?

I\'m developing a quick side project that needs a users table, and I want them to be able to store profile data. I was already reaching for the ASP.NET profile provider when I realized that users will[详细]

2023-02-25 03:56 分类：问答
Denormalized many-to-many mapping

In SQL Server 2008 R2 I have a table with the following structure ( IdINT NOT NULL PRIMARY KEY, Left1INT NOT NULL,[详细]

2023-02-24 07:32 分类：问答
I keep messing up 1NF

For me the most understandable description of going about 1NF so far I found is ‘A primary key is a column (or group of columns) that uniquely identifies each row. ‘ on www.phlonx.com[详细]

2023-02-23 07:02 分类：问答
Normalization question regarding address,city,country data

I currently have 3 tables s开发者_如何学JAVAtoring information about all the main cities in the world, each region/state that corresponds to those countries, and each city that is in those states/regi[详细]

2023-02-23 06:38 分类：问答
Show Normal Number Instead of Exponential Form

I want to show number in a Normal form instead of Exponential开发者_如何学Go Form For Example My Number is stored in a double variable with value 1234567890123[详细]

2023-02-22 09:03 分类：问答
One to Many Database Relationship

Guys I would really appreciate it if someone could help me with this.I have a schema with 4 tables relevant to this question Books, Groups, ReadingList, Comments.A user of the system can join a group[详细]

2023-02-22 06:42 分类：问答
Should I normalize similar schema even if the data may be conceptually unrelated?

Lets say I have a table of things, and I need to keep some auditing information on who, when and where was something done to the things.[详细]

2023-02-21 17:35 分类：问答