In most cases, swollen glands return to normal size after the illness or infection has passed. But here are some things to watch for: Glands that swelled up very suddenly; Glands that are much larger than they should be, not just mildly swollen; Glands that feel hard or don't move when you push on them
From Wikipedia, the free encyclopedia. Database normalization, or simply normalization, is the process of organizing the columns (attributes) and tables (relations) of a relational database to reduce data redundancy and improve data integrity.
Logical vs Physical Database Model. Logical and physical database models are required in order to visually present the database that has been proposed for a certain business requirement. The models help in showing the association of business requirements and the database objects. This is necessary in order to gather all requirements of the database accurately and completely. Data modeling is the link between the system requirements and business needs. There are two data models, logical and physical. Logical Database Model. Logical database modeling is required for compiling business requirements and representing the requirements as a model.