DATA MODELING: How to build Entity-Relationship Diagram?
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
SQL BASICS : How to manipulate and query relational database?
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…