Last updated
Kurskode
sqlmysql
Varighet
14 timer (vanligvis 2 dag inkludert pauser)
Krav
- Computer literacy
- Knowledge of any operating system
Oversikt
- Hvordan lage en spørring?
- Hva er en relasjonsdatabase?
- Hva er strukturen og SQL kommandoene?
Machine Translated
Kursplan
Relational database models
- Relational operators
- Characteristics of declarative SQL language
- SQL syntax
- Division language DQL, DML, DDL, DCL
Data Query Language
- SELECT queries.
- Aliases columns of tables
- Service date (DATE types, display functions, formatting)
- Group Features
- Combining internal and external tables (JOIN clause)
- UNION operator
- Nested Subqueries (the WHERE clause, the table name, column name)
- Correlated subqueries
Data Modification Language
- Inserting rows (INSERT clause)
- Inserting rows by request
- Variation of the rows (UPDATE)
- Delete rows (DELETE)
Data Definition Language
- Creating, altering and dropping objects (CREATE, ALTER, DROP)
- Creating tables using subquery (CREATE TABLE .... AS SELECT...)
CONSTRAINTS
- Options NULL and NOT NULL
- CONSTRAINT clause
- ENUM type
- type SET
- PRIMARY KEY condition
- UNIQUE condition
- FOREIGN KEY condition
- DEFAULT clause
Transactions
- The command COMMIT, ROLLBACK, SAVEPOINT
