Types of databases

Types of databases

1. local databases

   • why are they used?
     • Only one person can access it
   • Example
     • A financial part of business would be restricted and can only be accessed by one person.

2. Network databases

3. flat databases

   • An advantage is that there is no need to through lots of databases
   • a disadvantage is that a lot of typing is needed to keep things up to date.

4. Relational databases

   • A relational database Is a group of tabled data that is linked together to make things easier
   • A disadvantage of Relational Databases is that there is in some cases many tables will be there
   • The information separated into discrete entities. Based on the real world e.g. employee, product, order
   • entities are described by a series of fields and describes the different structures

5. Online databases

   • Example
     • Store details and information, using the internet. This requires internet connection.
   • why are they used
     • Super markets who are storing products and selling products like Asda, Tesco's, Sainsbury etc.