Summary of management examples about database tables

Create database Create a database that saves employee information create database employees; Other related commands show databases; View all current databases use employees; "Use" a database to make it the current database naming rules The database name must not exceed 30 characters, and the variable name is limited to 29 characters. Must only contain A–Z, a–z, 0–9, _63 characters in total You cannot leave spaces between characters in the object name Must not have the same name as other user-defined objects You must ensure that your fields do not conflict with reserved words, database systems or common methods Maintain consistency in field names and types. Be sure to ensure consistency when naming fields and specifying data types for them. If

1. MySQL database, table management, database addition, deletion, modification and query

Introduction: You must ensure that your fields do not conflict with reserved words, database systems or common methods. Keep field names and types consistent. Be sure to ensure consistency when naming fields and specifying data types for them. If the data type is an integer in one table, don't change it to a character type in another table

2. PHP5 management of any Mysql5 database table Code Example (4)_PHP Tutorial

Introduction: PHP5 management code example (4) for any Mysql5 database table. Continued: If you click to delete an entry, it will jump to del.php (as the current mainstream development language) //del.php (as the current mainstream development language) html headtitleDeleting an entry from th

3. PHP5 management code example for any database table of Mysql5 (1)_PHP tutorial

Introduction: PHP5 for any database of Mysql5 Table management code example (1). php (as the current mainstream development language) 5+MySQL (the best combination with PHP) 5+apache (the most popular WEB server platform on the Unix platform) 2 is already the most popular website building model. In the

4. PHP5 management code example for any database table of Mysql5 (2)_PHP tutorial

Introduction: PHP5 management code example for any Mysql5 database table (2). Continued: Clicking to add an entry will jump to add.php (as the current mainstream development language) //add.php (as the current mainstream development language) html headtitleAdd an entry to the database/ti

5. Oracle table management----Table name and column naming rules

Introduction: Oracle table management ----The naming rules for table names and columns must start with a letter and the length cannot exceed 30 characters. Oracle reserved words cannot be used. Only the following characters can be used: A

6. In Oracle Data types and table management

Introduction: Date type date contains year, month, day and hour, minute, and second timestamp. This is Oracle9i's extension of the date data type (timestamp) date type. The time is more accurate picture class

7. Some notes on Oracle partition table management

Introduction: Oracle partition table Management notes (limited to partition management of ordinary tables, that is, heap tables, IOT and CLUSTER TABLE are no longer discussed)

8. Management and management of Oracle external tables Application

Introduction: As a table type in Oracle, external tables are not as easy to use as ordinary database tables, but sometimes they can be used during data migration or data loading. It brings great convenience, sometimes it is better than using

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