Database design typically involves three main levels: conceptual, logical and physical. At the end of the conceptual stage, an Entity-Relationship Diagram (ERD) can be created, illustrating all identified entities along…
Abilities to define and enforce database constraints is one of the advantages that a Database management system provides, along with ability to control redundancy, restrict unauthorized access and persistently store,…
Data modeling is a critical step of database design. It involves translating business requirements about data into a technical blueprint. Data modeling is applied to build new databases or to…
SQL (Structured Query Language) is used to extract information from data stored in a Relational Database (RLDB). A RLDB consists of multiple tables, each containing rows and columns to record…