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What is ENUM data type in MySQL?
The ENUM data type in MySQL is a string object. It allows us to limit the value chosen from a list of permitted values in the column specification at the time of table creation. It is short for enumeration, which means that each column may have one of the specified possible values.
What is an ENUM and SET data type in MySQL?
ENUM and SET types are the special string types in which values are chosen from the fixed list of values set in the database table. MySQL provides two data types ENUM and SET types. Both ENUM and SET types allow us to specify a list of possible values for a column with a default value.
Is enum a collection?
What Is an EnumSet. An EnumSet is a specialized Set collection to work with enum classes. It implements the Set interface and extends from AbstractSet: Even though AbstractSet and AbstractCollection provide implementations for almost all the methods of the Set and Collection interfaces, EnumSet overrides most of them.
How to create an EER model diagram using MySQL?
I am creating EER model diagram using MySQL Workbench ( version : 5.2.47) The version for MySQL, I am using is 5.5.35-0ubuntu0.13.10.2. I have created a schema with ‘Default Collation’ set to ‘utf8 – utf8_general_ci’. I have created a table in EER diagram. My basis goal is to add a column with ENUM data type.
How is the enum data type used in MySQL?
In MySQL, an ENUM is a string object whose value is chosen from a list of permitted values defined at the time of column creation. The ENUM data type provides the following advantages: Compact data storage. MySQL ENUM uses numeric indexes (1, 2, 3, …) to represents string values.
Can you create an enum in MySQL Workbench v5.x?
ENUM datatype was not supported in MySQL Workbench v5.x. I had the same problem with MWB v5.2. I just downloaded the latest 6.x (v6.1.4) and was able to create an ENUM which now appears in the Datatype dropdown menu of the table editor.
How to add a table to the EER diagram canvas?
The EER Diagram canvas is where object modeling takes place. To add a table to the canvas, select the Catalog tab in the middle panel on the right side of the application to display any schemas that appear in the MySQL Model tab.