1. Database Management System (DBMS) an Introduction DeSiaMore www.desiamore.com/ifm 1

2. Intro to DBMS Understand why databases are important to modern organizations Understand how databases work Understand how organizations can maximize their strategic potential with databases Objectives DeSiaMore www.desiamore.com/ifm 2

3. Intro to DBMS Data is a vital part of any organization. It needs to be stored, organized, managed, accessed, protected and manipulated. Operational Use databases to: Create a book Track book sales Set salaries and wages Pay employees DeSiaMore www.desiamore.com/ifm 3

4. Purpose of DBMS The purpose of a database is to keep track of things Unlike a list or spreadsheet, a database may store information that is more complicated than a simple list Intro to DBMS DeSiaMore www.desiamore.com/ifm 4

5. Database Management for Strategic Advantage The Database Approach: Foundational Concepts DBMS – Database Management Systems Use a DBMS software to create, store, organize, and retrieve data from a single database or several databases Example: Microsoft Access Intro to DBMS DeSiaMore www.desiamore.com/ifm 5

6. Database Management for Strategic Advantage Advantages of the Database Approach Program-data independence Minimal data redundancy Improved data consistency Improved data sharing Increased productivity of application development Enforcement of standards Improved data quality Improved data accessibility Reduced program maintenance Intro to DBMS DeSiaMore www.desiamore.com/ifm 6

7. Database Management for Strategic Advantage Effective Management of Databases The database administrator (DBA) : Works with programmers and analysts to design and implement the database Works with users and managers to establish database policies Implements security features and establishes database permissions Intro to DBMS DeSiaMore www.desiamore.com/ifm 7

8. Intro to DBMS The four components of a database system are: Users Database Application Database Management System (DBMS) Database Database Systems DeSiaMore www.desiamore.com/ifm 8

9. Intro to DBMS Database Systems DeSiaMore www.desiamore.com/ifm 9

10. A user of a database system will Use a database application to track things Use forms to enter, read, delete and query data Produce reports Database Systems - Users Intro to DBMS DeSiaMore www.desiamore.com/ifm 10

11. Intro to DBMS Database Systems – Database Application A set of one or more computer programs that serves as an intermediary between the users and the DBMS Application program that read or modify database data by sending SQL statements to DBMS. Application program to present data to users in the format of forms and reports. DeSiaMore www.desiamore.com/ifm 11

12. Create and process forms Process user queries Create and process reports Execute application logic Control database applications Database Systems – Database Application : Functions Intro to DBMS DeSiaMore www.desiamore.com/ifm 12

13. Intro to DBMS Database Systems – DBMS A computer program used to create, process and administer the database DBMS receives request encoded in SQL and translates these requests into actions on the database DBMS is a large, complicated program that is licensed software. Almost majority of the companies never write their own DBMS program. DeSiaMore www.desiamore.com/ifm 13

14. Intro to DBMS Database Systems – Database The database is a collection of related tables and other structures. A database is a self-describing collection of related records DeSiaMore www.desiamore.com/ifm 14

15. Create databases Create tables Create supporting structures Read database data Modify database data (insert, update, delete) Maintain database structures Enforce rules Control concurrency Provide security Perform backup and recovery Intro to DBMS Functions of DBMS DeSiaMore www.desiamore.com/ifm 15

16. Intro to DBMS Organizational DBMS DeSiaMorewww.desiamore.com/ifm 16

17. Organizational database systems typically: Support several users simultaneously Include more than one application Involve multiple computers Are complex in design Have many tables Have many databases Intro to DBMS Organizational DBMS DeSiaMore www.desiamore.com/ifm 17