This document discusses databases and database management systems (DBMS). It defines key concepts like data, information, databases, computerized databases, simple and relational databases. It explains that a DBMS allows users to store, modify and extract data as needed. Advantages of a DBMS include controlling redundancy, enforcing integrity and standards, sharing data, and restricting unauthorized access. Disadvantages can include complexity, size, performance issues, and costs. The document provides steps for planning a database, such as determining its purpose, needed tables, fields, and relationships.

2. LET’S TRY
THIS
•Get a pen and a whole
sheet of paper.
•Create a list of the
names of your family
members and their
birthdays.
Name
Birthda
y

3. UNDERSTANDIN
G DATABASES

4. DATA
•a raw material that needs to be processed
before it can be turned into something
useful
•come in varied forms like words, number,
or symbols
•relates to transactions, events, and facts
Information – processed data
which becomes useful to
whoever needs it

5. DATABAS
E
•data collected and
stored for a specific
purpose
•used for
recordkeeping in
schools and offices

6. DO
THIS!
•In MS Excel, type the
information you have in the
previous activity.
•Follow the format in page 4
of your book.
•Save it using the filename
1stdbase.xls

7. COMPUTERIZED
DATABASE
•compact, flexible, and fast
•can store thousands of data
without occupying too much space
•data is stored in a computer
system, which allows users to
enter, access and analyze data
quickly and easily

8. TYPES OF COMPUTERIZED
DATABASE
Simple database
•contains one specific category of
data
Relational database
•collections of different sets of
data related to each other

9. DATABASE MANAGEMENT SYSTEM
(DBMS)
•a collection of computer
programs that enables users
to store, modify, and extract
information based on per
requirements
•serve as the middle person
between the programs and the

11. ADVANTAGES OF DBMS
•controls redundancy
•enforces integrity
•avoid inconsistency
•shares data
•enforces standards
•restricts
unauthorized access

12. •solves enterprise requirement than
individual requirement
•provides backup and recovery
•lowers development and maintenance
cost
•develops data model
•controls concurrency
ADVANTAGES OF DBMS

13. DISADVANTAGES OF
DBMS
•complexity
•size
•performance
•higher impact of a
failure
•cost
•additional
hardware costs
•cost of conversion

14. PLANNING A
DATABASE
1.Determine the purpose of your
database.
2.Determine the tables you need.
3.Determine the fields you need.
4.Determine the relationships.
5.Refine your design.