1. What is Database?
A database is a collection of data with defined structure and purpose.
Data can easily be accessed, managed, and updated.
Data can be in any number of formats
electronic, printed, graphic, audio, statistical, combinations
Difference between Data and Information?
Data are physical data such as numbers, text, images, and videos. Data is a representation of information.
Information is knowledge that is derived from study, experience, or instruction. Information is any kind of knowledge that is exchangeable amongst people, about things, facts, concepts, etc., in some context. Information is interpreted data

2. Components A database consists of one or more tables.
Each table has its own unique name and consists of columns and rows.
Example: Spreadsheets (Microsoft Excel) –data in tabular form
If you’re familiar with spreadsheets like Microsoft Excel, you’re probably already familiar with storing data in tabular form.
PID
SSN
FNAME
LNAME
DOB
AGE
CITY
1111
John
Smith
1/1/1990 21
Fairfax
1112
Lisa
Baker
3/15/1980 31
1113
Edward
Cook
12/12/1977 32
Vienna
1114
Tove
Nilsen
7/8/2000 11

3. What is DBMS?
A DBMS is a software package with computer programs that control the creation, maintenance, and the use of a database.
Examples:
Oracle, Microsoft SQL Server, IBM DB2, Informix
Microsoft Access, Microsoft FoxPro, MySQL, Borland dBase
Technically speaking, it is a software system that uses a standard method of cataloging, retrieving, and running queries on data.
You might find a DBMS at school’s library or at a site on the internet.
VA uses Vista as its electronic medical record system. Mumps is its DBMS. It is hierarchical database

4. What is Database System?
The DBMS software together with the data itself.

5. A Database System Environment