based on collections of tables, each has a primary key, tables are linked together with foreign keys. less machine efficient, much easier to work with for developers.
based on collections of tables, each has a primary key, tables are linked together with foreign keys. less machine efficient, much easier to work with for developers.
two dimensional tables made up of rows and columns. similar to a spreadsheet file. relational databases support the explicit and implicit use of transactions to ensure data integrity.