The simplest model for storing data.
Consists of a single, two-dimensional table of data elements.
Each row in the table is a record and each column of the table is a field.
Allows one-to-one and one-to-many relationships.
Offer lightning quick searches.
Utilize a minimum amount of disk space for storage.
Uses a mesh-like structure to offer the additional capacity to define many-to-many relationships.
Rarely used today for business, consumer, and other mainstream database applications.
Remain in use only for specialized applications.
Stores data in a collection of related tables.
Each table is a sequence of records similar to a flat file.
All the records in a table are of the same record type.
Organizes relationships over three or more dimensions.
Sometimes referred to as a multidimensional database.
Each field is contained within a cell that can be accessed directly from a query or from following a relationship.