How to use groupadd command in Linux?
groupadd command in linux is used to create a new group. groupadd [Options] group. The list of existing groups in the system is available in /etc/group file
Month: September 2019
Conversion of E-R Diagram into Relational Model
Conversion of an E-R diagram into a relational model is required because E-R diagrams represent the conceptual level of the database design while the relational model represents the logical level.
How to use usermod command in Linux?
usermod command in linux is used to modify an existing user’s account information. Only the super user can use this command.
Relationships in the E-R Diagram
Relationships in the E-R diagram play a very vital role as they are the ones with the help of which one can convert any E-R diagram into database tables
How to use userdel command in linux?
userdel command in linux is used to delete an existing user and related files. Only the super user can use this command.
How to create users using useradd command in Linux?
useradd command is used to add a new user in the system. In other words it is used to create a new login account for a different user. useradd command can be used only by the root user.
How to change password using passwd command in Linux?
passwd command in linux is used to change the user password
Entity-Relationship Model: E-R Diagrams
Entity-Relationship Diagrams is a visual tool which is helpful to represent the Entity-Relationship model. It was proposed by Dr. Peter Chen in 1971.
Introduction to Database Management system
Database management system is required to create, manage and delete database. It helps in efficient retrieval, insertion and deletion of data in the database.