Databases
- Relational
- Nonrelational Database
- Hierachical Databases
- Network Databases
- Object-Oriented Databases
- UNSIGNED Data Attribute => forbid the use of negative numbers in this field
-key and Constraints => Enforce certain restrictions on your data.
- Primary keys
- Unique Keys
- Foreign Keys
- Index
- Adding fields on a table you can specify the position to First or After <other Field>
- ALTER TABLE *** ADD COLUMN <NAME> <DATATYPE> <ATTRIBUTES> <POSITION>
class that connects to the database and allows you to interact with it.
Not tied to MySQL only.
#OOP IN PHP For modular structure for your application Easy to maintain Code Re-use