What is the data structure of mysql?

MySQL is a relational database, its data structure includes: Table: logical data collection, composed of rows and columns Row: specific data sample, called record Column: Data attribute, called field data type: A wide selection for storing different data types Primary keys: Columns that uniquely identify each row Foreign keys: Relational columns that join tables Indexes: Special structures for quickly finding data

MySQL’s data structure

MySQL is a relational database management system (RDBMS) that uses tables, rows, and columns to store and organize data.

Table

• Table is a collection of logical data, stored on the hard disk.
• Table consists of rows and columns.
• Each table has a unique name.

Rows

• Rows represent examples of specific data.
• Each row contains the value of a specific column.
• Rows are also called records.

Columns

• Columns define specific properties of the data in the table.
• Each column has a unique name and data type.
• Columns are also called fields.

Data type
MySQL supports various data types for storing different types of data, for example:

• Numeric type (INT , FLOAT, DECIMAL)
• String type (CHAR, VARCHAR, TEXT)
• Date and time type (DATE, TIME, DATETIME)
• Binary data type (BLOB, MEDIUMBLOB, LONGBLOB)

Primary key and foreign key

• Primary key: The column that uniquely identifies each row in each table or column combination.
• Foreign key: A column that relates rows in one table to rows in another table.

Index

• Index is a special structure of columns in a table that is used to quickly find data.
• Indexes speed up searches of data, especially when the table is large.

Relationships
Relationships between tables can be defined through foreign keys. Types of relationships include:

• One-to-many: One row of one table is associated with multiple rows of another table.
• Many-to-many: Multiple rows of one table are related to multiple rows of another table.

Advantages
The advantages of MySQL data structures include:

• Flexible and extensible:can be created and modified tables to meet changing data needs.
• Efficient storage: Use compact row format and index to optimize storage space.
• Quick Access: By using primary keys and indexes, data can be retrieved quickly.

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