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Types of Information managed by different organizations

Directions: Fill in the missing letters to identify the type ofinformation managed by the following organizations. :

__ __ ___ A __ ___ I __ __ __ R __ __ S __ __ T __ __ __F I N N C A L T A N A C I O N

1

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Types of Information managed by different organizations

__ __ T __ __ N __P A I E T3 __ E __ __ R __R C O D

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Types of Information managed by different organizations

__ __ __ C __ A __ __ I __ E M E R H N4 __ N __ __ N __ __ R __

D S

VI E T O Y

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Types of Information managed by different organizations

__ __ __ T __ M __ R C U S O E

5

__ E __ __ R __R C O D

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Lesson 1: Understanding Database

A database is a collection of information that is related to a particular subject or purpose.

Examples of simple database: When you let your classmates sign in your slumbook, your

slumbook becomes a database. When you create a telephone directory for your friends, your

telephone directory becomes a database. When you make a list of items, their categories and prices to

buy in a bookstore, the list becomes a database. The teachers class record and student profile written on

index card are also examples of a database.

What is a database?

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Lesson 1: Understanding Database

What is DBMS?

The kind of database we have just discussed is calledtraditional or manual database.

A computerized database, which we will learn is calledDBMS.

A DBMS or Database Management System is a collectionof computer programs that enables users to create andmanage databases. It manages all requests for databaseaction from the users, such as updates and queries.

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Lesson 1: Understanding Database

Kinds of databases

A Flat-file database is a listof information that is notnecessarily related to anyother lists or tables.

A relational database is athe type that storesinformation and conductssearches by using data in

related tables.Example:A single list of students names,their levels, and sections in anexcel worksheet

If a relationship is createdbetween two or more tables,it becomes a relationsdatabase.

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Lesson 1: Understanding Database

Information in a databaseis usually organized andstored in a table .Each table containsinformation about aspecific topic.

Rows in a table are called records .

Columns are called fields .

A field is a category of information.

A record is the set of fields for a specific item.

Table Fields

R e c o r

d s

Tables, fields, and records

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Lesson 1: Understanding Database

Advantages of DBMS

Compared to a manual database, a computerized database is more flexible, compact, and faster.

It reduces the probability of inconsistent data. When a database is teamed with computer, many of the problems

with a manual database are eliminated.

compact

faster It can find a specific record or information from amongthousands or even million entries within seconds.

Since database records stored in filing cabinets can be stored ina single memory storage device.

flexible It has the ability to examine information from a number of ways,

so you could search for people living in the same city, or withpersons with the same last names.

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Lesson 1: Understanding Database

The Big Project

Now that you have the basic concepts of databases and their practicalapplications, we can now start planning and developing the end of thequarter project,

Create a computerized librarysystem that will facilitatetracking of borrowed andreturned books. The

computerized system shouldallow the library to update therecords of books and of theborrowers. The system shouldcontain the following

databases:

A database for studentsA database for booksA database fortransactions

A main menu that willpresent choices for theusersScreens or forms that willlet adding, editing, anddeleting of records.

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Examples of Database ManagementSystem

Library System School Admission System

Warehouse Inventory Patients Record _____________________ _____________________ _____________________

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Quiz 1:

Directions: Answer the following briefly:1. Write down at least two examples of a manual

database.

2. What motivates the study of DBMS?3. What are the advantages of a computerized

database over a manual database?

4. Give some instances when we encounter DBMS.5. Classify the kinds of databases and differentiateeach.

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Assignment 1:

Create a manual database in your notebook thatwill contain 20 records. The database will benamed My Friends Directory. The fields to beused are First Name, Last Name, MobileNumber, Address, Year level, and section.