database-table

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How do you determine the base table?

My question is in relation to database theory. If I am given a set of tables, is there a way to determ开发者_运维技巧ine the base table just by looking at them?It is a tenet of the relational model[详细]

2023-02-27 11:46 分类：问答
database design: what fields are must for a user table in database?

I am trying to design a user table for MySQL. for now, my user table looks like this users ( BIGINT id, VARCHAR(?) username,[详细]

2023-02-23 23:27 分类：问答
One table column for many fk tables?

What is the best solution/practice for situation like this? I have a table, that can reference to multiple tables (objects)?[详细]

2023-02-22 04:31 分类：问答
Wrong TimeZone in DataTable

I Have a web site, which is on server1. It uses web service, which is on server2. Web service uses database, which is on server3.[详细]

2023-02-19 03:07 分类：问答
'Users' SQL table out of control. Searching for a better way

I\'ve been programming and using a survey software for more than three years. It began as a simple survey system, with a basic \'users\' SQL table, as you can find, for instance, in most CMS\'s. I ini[详细]

2023-02-17 19:47 分类：问答
Creating Multiple tables in SQLite on Android

Hi there i want to create two distinct tables in a database. These tables are User_details and Creditcard_details[详细]

2023-02-15 23:13 分类：问答
How can I list all tables in a database with Squirrel SQL?

I use Squirre开发者_如何学Gol SQL to connect to a JavaDB/Derby database on my desktop. I can run SQL queries.[详细]

2023-02-08 06:57 分类：问答
Is there any reason to worry about the column order in a table?

I know you can ALTER the column order in MySQL with FIRST and AFTER, but why would you w开发者_如何转开发ant to bother? Since good queries explicitly name columns when inserting data, is there really[详细]

2023-02-01 08:26 分类：问答
Detect queried field via greatest()

I\'m using the mysql GREATEST() function to select the highest integer value from either column (apples or peaches).[详细]

2023-01-28 17:46 分类：问答
Mysql primary key when using INSERT INTO ... ON DUPLICATE KEY UPDATE

My table structure is: CREATE TABLE IF NOT EXISTS `users_settings_temp` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT,[详细]

2023-01-28 08:39 分类：问答