Different database management systems define
schema in their own way. This can make it difficult for database developers to work out exactly what a schema is – especially when switching between different DBMSs.
This article provides definitions used by the three leading database systems.
Continue reading “Schema Definitions by DBMS”
In database terms, a
schema (pronounced “skee-muh” or “skee-mah”) is the organisation and structure of a database. Both schemas and schemata can be used as plural forms.
A schema contains schema objects, which could be
tables, columns, data types, views, stored procedures, relationships, primary keys, foreign keys, etc.
A database schema can be represented in a visual diagram, which shows the database objects and their relationship with each other.
A basic schema diagram representing a small three-table database.
Above is a simple example of a schema diagram. It shows three tables, along with their data types, relationships between the tables, as well as their primary keys and foreign keys.
Continue reading “What is a Database Schema?”
To reverse engineer a
database in MySQL Workbench:
Database > Reverse Engineer from the top menu of MySQL Workbench Set/review parameters for connecting to the DBMS then click
Continue Enter password if required, then click
OK The wizard will connect to the DBMS, fetch a list of databases, and check for any issues. Click
Continue Select the database/s you would like to reverse engineer, then click
Continue The wizard will retrieve all objects from the selected schema/s and check the results. Click
Continue Select the database objects you’d like to have reverse engineered, then click
Execute The wizard will now reverse engineer all selected objects and generate the EER diagram (behind the scenes). Click
Continue A summary is displayed. Click
The EER diagram is now displayed on the screen.
Continue reading “How to Reverse Engineer a Database in MySQL Workbench”