MYSQL02: Creating Database
MySQL database server manages more than one databases. But first, a database
needs to be created inside the server before we can store some data. To create
a database we use CREATE and DATABASE command.
Columns represent the fields of the table. Fields are what data the table can store. Each row is a record of an entity. For example:
CREATE DATABASE databaseName;
These commands will create a database with a given name. Database
name are usually same as the application name, for example if we a developing
an application for bookstore, most logical name for the database is also
bookstore.
Once the database is created it has no data. It need tables to store them because, data are stored
inside table. Each database can have one or more tables. Each table made of rows and columns.
Column 1
|
Column 2
|
Column 3
|
…
|
|
Row1
|
||||
Row2
|
||||
…
|
Columns represent the fields of the table. Fields are what data the table can store. Each row is a record of an entity. For example:
id
|
name
|
age
|
1
|
Calvin
|
12
|
2
|
Joe
|
15
|
3
|
Rosy
|
17
|
Where, (id, name,
age) are fields of these table. First record is [1, Calvin, 12]. Followed by [2,
Joe, 15] the second record and [3,
Rosy, 17] is the third and last record.
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