What are the data structures of mysql?

MySQL provides a variety of data structures, including: tables, rows, columns, data types, constraints, indexes, views and storage engines. Tables are used to organize related data, rows represent data records, columns represent data fields, data types specify the type of data stored in the fields, constraints enforce rules on the data, indexes are used to quickly search data, views create virtual tables based on existing tables, Storage engines use different technologies to organize and index data.

Common MySQL data structures

MySQL provides a variety of data structures to store and organize data, including:

Table

• Table is the basic data structure in MySQL, used to organize related data.
• A table consists of rows and columns, where rows represent individual data records and columns represent data fields.

Row

• A row is a record in the table that contains the values ​​of all fields.
• Rows are identified by primary key or unique index.

Column

• Column represents a data field in the table.
• Each column has a name, data type and constraints.

Data Types

• MySQL provides various data types to store different data types, such as integers, floating point numbers, strings, and dates.
• Each data type has its own storage requirements and limitations.

Constraints

• Constraints are used to enforce rules on data to ensure data integrity and consistency.
• Common constraints include primary keys, foreign keys, unique indexes and non-null constraints.

Index

• An index is a data structure used to quickly search data in a table.
• Indices work by associating the value of a column with a pointer to a row location.
• Indexes can greatly improve query performance, especially when the table is large.

Views

• Views are virtual tables created based on data from one or more existing tables.
• Views provide a way to view data from different perspectives without modifying the original table.

Storage Engine

• MySQL provides different storage engines, each using its own data organization and indexing technology.
• The most common storage engine is InnoDB, which provides transaction support and foreign key constraints.

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