1.1. Sometimes referred to as a multidimensional database, organizes relationships over three or more dimensions. Each field is contained within a cell that can be accessed directly from a query or from following of the relational database model in which tables are stacked in addition to being linked side by side.
2. Object Database
2.1. Sometimes referred to as object-oriented database, stores data as objects, which can be grouped into classes and defined by attributes and methods. An object-oriented database is used to describe a variety of technologies that combine object-oriented and relational concepts.
3. Relational Database
3.1. It stores data in a collection of related tables. Each table is a sequence of records, similar to a flat file, all records that are in a table are of the same record type and each row is equivalent to a field. A relational database uses six tables to store data.
4. Hierarchical Database
4.1. Allows one-to-one and one-to-many relationships, linked in a hierarchical structure.
5. Network Database
5.1. It uses a mesh-like structure to offer the additional capacity to define many-to-many relationships.
