1. Powerpoint Templates Page 1 BZUPAGES.COM

2. Powerpoint Templates Page 2 BZUPAGES.COM PRESENTED TO:

3. Powerpoint Templates Page 3 BZUPAGES.COM  SUBJECT ICT  COMBINATION: BS( IT ) 1 st Semester  Department of computer science BZU Multan

4. Powerpoint Templates Page 4 BZUPAGES.COM Data Base Mangement W EB D ATABASE Customer

5. Powerpoint Templates Page 5 BZUPAGES.COM PRESENTED BY:  Malik Zulifqar Hussian  Ahmad Arib  Shahzad Baqer  Hamza nabeel  M.Jahangeer

6. Powerpoint Templates Page 6 BZUPAGES.COM Data : Data is collection of raw facts and figure. -Data is collect from different sources. - data in the form of picture,text, symbol,numbers.

7. Powerpoint Templates Page 7 BZUPAGES.COM 1.Data that has not been processed in any manner. 2. It often refers to uncompressed text that is not stored in any proprietary format. 3. It may also refer to recently captured data that may have been placed into a database structure, but not yet processed. 4.That is collect first time. Primary Data:

8. Powerpoint Templates Page 8 BZUPAGES.COM Database Database is an organized collection of related data is stored in efficient and compact manner. Example of Database: 1.Phone Directory 2.Library 3.account

9. Powerpoint Templates Page 9 BZUPAGES.COM 1.Any information collected from intermediate sources. Industry figures, databases, library sources and so forth are examples of secondary data.sourceIndustrydatabasesource 2. data collect from another resource that have alredy collected data. Secondary Data:

10. Powerpoint Templates Page 10 BZUPAGES.COM DBMS (Database Management System) : A database management system (DBMS) is a collection of programs that are used to create and maintain a databse. It provides the some facility that are 1.Insert (put) 2.Delete 3.Update(Modify) 4.Retrive (show)

11. Powerpoint Templates Page 11 BZUPAGES.COM Entity : An entity is a person,place,thing or event for which data is collected and maintained. For example 1.a library system may contain data about different entities like BOOK and MEMBER. 2.A college system may include entities like STUDENT,TEACHER and CLASS...

12. Powerpoint Templates Page 12 BZUPAGES.COM Attribuates: In general, an attribute is a property or characteristic. Color, 1.for example, is an attribute of your hair. In using or programming computers, an attribute is a changeable property or characteristic of some component of a program that can be set to different values. Eg.1Eg.2

13. Powerpoint Templates Page 13 BZUPAGES.COM Key: In database management systems, a key is a field that you use to sort data. It can also be called a key field, sort key, index, or key word.database management systemsfielddata

14. Powerpoint Templates Page 14 BZUPAGES.COM Primary Keys: The first type of key we’ll discuss is the primary key. Every database table should have one column designated as the primary key.primary key

15. Powerpoint Templates Page 15 BZUPAGES.COM The other type of key that we’ll discuss in this course is the foreign key. These keys are used to create relationships between tables. Natural relationships exist between tables in most database structures.foreign key Foreign Keys:

16. Powerpoint Templates Page 16 BZUPAGES.COM A candidate key is a combination of attributes that can be uniquely used to identify a database record without any extraneous data. Each table may have one or more candidate keys. One of these candidate keys is selected as the table primary key. Candidate Key

17. Powerpoint Templates Page 17 BZUPAGES.COM Relational database Management system A short definition of an RDBMS may be a DBMS in which data is stored in the form of tables and the relationship among the data is also stored in the form of tables.

18. Powerpoint Templates Page 18 BZUPAGES.COM sorts of relationship in database 1. One-to-One Relationship In one-to-one relationship, two tables are associated in such a way that each record in first table can have only one matching record in second table, and each record in second table can have only one matching record in first table. Consider the relationship between countries and their capitals given below.

19. Powerpoint Templates Page 19 BZUPAGES.COM sorts of relationship in database 2. One-to-Many Relationship In one-to-many relationship, two tables are associated in such a way that each record in the first table can have many matching records in second table, but a record in second table has only one matching record in first table.

20. Powerpoint Templates Page 20 BZUPAGES.COM sorts of relationship in database 3. Many-to-Many Relationship In many-to-many relationship, two tables are associated in such a way that each record in the first table can have many matching records in second table, and a record in second table can have many matching records in first table.

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22. Powerpoint Templates Page 22 BZUPAGES.COM *ZULFIQAR* *HUSSAIN* *MA*MALIK* LIK* **MALI*MALIK* MALIK