Database management system
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The document discusses database management systems (DBMS). It defines a database as a set of related data and provides examples of student and employee databases. It then defines a DBMS as software that allows users to access and perform operations on data within a database. A DBMS acts as an interface between users and the database. It also lists some key functions of a DBMS like making databases easy to use, providing centralized control, and ensuring data security.
Database management system
- 1. Database Management System By Prakash Date: 13 Nov 2010
- 2. What is database? A set of related data is called database. For example: Student database that consists of the following fields, Enrollment number, Student name, Department, Year, Address. Employee database that consists of the following fields, Employee number, Employee name, Department, Address, Date of joint, Salary.
- 3. What is Database Management System? DBMS is a software system that allows user to access the data contained in the database. DBMS acts as an interface between the user and the database. The user requests the DBMS to perform various operations (insert, delete, update and retrieval) on the database. For example: Train ticket reservation system and Bus ticket reservation system
- 5. What is purpose of the DBMS? Easy to use – Adding, updating and deleting data in database Centralized control of database – Share database to multiple user Data Security – User based security to the database
- 6. Before the introduction of DBMS: Information typically stored using file-processing system File processing is the process of creating, storing and accessing content of files Disadvantages in file-processing system: Data redundancy – Same data may appear in several files Data inconsistency – Changes in data may not reflect in all files Difficult in data access – To take reports very difficult Data isolation – Data are stored in various files Data integrity – Database accurate and consistent Data security – User level security
- 7. Real time example In the Telephone System Manufacturing company with more than 2,500 employees working in that company. Management asking the report like: Who are all getting salary more than 10,000?
- 8. SELECT * FROM Employee WHERE salary > 10,000 The above oracle command lists all records which the salary more than 10,000 If it is small company with 12 employees
- 9. DBMS used in Altacit Global IP docketing system Front end: Asp.Net (User Interface Screen) Back end: Sql server (DBMS) 2. Law Firm Management System Front end: Java script (User Interface Screen) Back end: Sql server (DBMS)
- 10. Admin login screenshot of IPdocket Assign Permissions User details
- 11. Dhanya login screenshot in IPdocket
- 12. Thank you