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1.1 Database and Table Operations Data Definition Language is used for defining database structures 1.1.1 Database Operations Display all databases: SHOW DATABASES; Display database creation details: SHOW CREATE DATABASE database_name; Create a database: CREATE DATABASE database_name; Create database with existence check: CREATE DATABASE IF NO ...

A database (DB) serves as a repository for storing and managing data. A Database Management System (DBMS) is software designed to manipulate and administer databases. Relational databases (RDBMS) are built on the relational model, organizing data into interconnected two-dimensional tables. This structure ensures uniform data storage, simplifyin ...

Table Creation and Data Types Table creation falls under DDL statements. Each database contains structural files for its tables: SHOW TABLES; Display table structure: DESCRIBE table_name; SHOW COLUMNS FROM table_name; Field Types Integer Types TINYINT (1 byte) SMALLINT (2 bytes) MEDIUMINT (3 bytes) INT (4 bytes) BIGINT (8 bytes) Decimal Typ ...

Data Definition Language (DDL) Database Operations Creating Databases -- Create a new database CREATE DATABASE db_name; -- Create database only if it doesn't exist CREATE DATABASE IF NOT EXISTS db_name; -- Create database with specific character set CREATE DATABASE db_name CHARACTER SET charset_name; -- Example: Create db4 with gbk charset ...

SQL is a domain-specific language engineered for managing relational database management systems (RDBMS) and processing streaming data within relational stream architectures. Rooted in relational algebra and tuple calculus, it integrates data definition directives with operational manipulation commands. The syntax encompasses record insertion, ...