Data Storage 2

Data Storage 2

1. Online Databases-Online Data bases are databases which are accessible using a network including the internet,They are very different to local databases as they have to be accessed and possibly updates, by millions of users normally these databases will have thousands of rows of information Usually information is foind in online databases by using a search engine

2. Data Definition Language(DDL)-This is the part which is used to define the database structure

3. Data Manipulatiom Language(DML)-This is the part used to add,delete, change and query the data which is held in the database structure