Database Management

Databases store information and its contents can be everything from product catalogs to repositories of customer information. For information to be easy to access, use and understand, database management systems are required. Database management systems can help sort information as well as link databases to each other and provide reports about changes and trends in the information in databases.

The two main types of Database

• Relational Databases : is that all data is tabulated in this model. Therefore, every row of data in the database is linked with another row using a primary key. Similarly, every table is linked with another table using a foreign key.
  Relational Database are : MySQL, IBM Cloud Databases, Microsoft SQL Server, PostgreSQL and many Databses
• NoSQL Databases : is referring to non SQL or non-relational is a database that provides a mechanism for storage and retrieval of data. This data is modeled in means other than the tabular relations used in relational databases.
  NoSql Database are : MongoDB, Cassandra, Amazon Neptune and many more