database-schema

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Optimal database schema structure strategy for a given situation

I\'m developing an unique application that uses a MySQL database and I\'m seeking some advice on my database schema strategy before I go and implement it.[详细]

2023-03-27 19:36 分类：问答
Retrieve MSAccess database column description

I have an MS Access 2002-2003 database. I\'d like to know if there\'s a way to programmatically retrieve the column descriptions. I can already obtain the column type, name, etc. using[详细]

2023-03-27 12:39 分类：问答
How to manage databases with limited amounts of data

Hi I am building a social network in dreamweaver using php and sql as my server languages to interact with my databases. I am going to use godaddy.com to host my website and they say that they will gi[详细]

2023-03-27 08:09 分类：问答
How to access a java Derby database? I could really do with a few helpful pointers

I am new to using Derby and databses in eclipse, and I have become a tad lost and in need to a bit of help. I have established a database connection, created a new database, and a new schema, within w[详细]

2023-03-26 16:38 分类：问答
Differences between key, superkey, minimal superkey, candidate key and primary key

I\'m new to MySQL, and I\'m re开发者_StackOverflow社区ally confused about the different terms that I\'ve encountered. I tried googling the answer but the results are really confusing and when I try an[详细]

2023-03-26 14:49 分类：问答
How can I replace the existing primary key with a new primary key on my table?

I\'m working with a legacy SQL Server database which has a core table with a bad primary key. The开发者_JAVA技巧 key is of type NVARCHAR(50) and contains an application-generated string based on vari[详细]

2023-03-25 10:09 分类：问答
Split MySQL databases

I have a question about split databases. This is the query in question: SELECT COUNT(*) FROM monies.link_monies_new lcn \'[详细]

2023-03-24 07:15 分类：问答
Creating a custom PostgreSQL type that is a set of other types?

The kind of information I want to store in this type is, for example: \"330.30 eur/ton\" or \"25.15 usd/kg\".[详细]

2023-03-23 08:27 分类：问答
How to implement an 'outer join' relationship in SQL Server?

This is a question that\'s probably going to incur the wrath of some DBA types but I\'m gonna ask it anyway!![详细]

2023-03-23 01:21 分类：问答
How to design a concurrent discount engine?

I was wondering if anyone could share any best practices around the design of a concurrent user e-commerce discount engine.[详细]

2023-03-22 03:49 分类：问答