Data base – an organized collection of data that is related to a particular subject or purpose
Data – raw facts
Information – organized facts
Data – a valuable corporate resource which needs adequate, accurate, consistent and secured control
2 types of data base: (manual, electrons)
MS ACCESS
-acts as a database program which helps in
gathering sorting big data
-sorting and manipulation of large amount of
information is managed
-built to store, sort and manipulate databases
since it has the storage capacity
-requires to learn Ms Access via course or
instructor
-works on the model of multiple relational tables
and sheets
-locks data at the record level
MS EXCEL
-uses spreadsheets to create graphs, tabular
models and charts
-also used in financial calculations
-easy to learn and can be used by beginners
-built to store data due to short storage capacity
-works on the data model of non-relational or flat
worksheet
-locks the entire spreadsheet
DBMS (Database Management System)
-a computerized or electronic database. It is a program that controls the organization, storage, retrieval,
security and integrity of database
Examples:
Point of Sales System
-commonly used in the grocery or dept. store. It records your transaction and generates updated reports
for the store owner or manager
ATM
-allows you to conduct banking transaction such as withdrawing and depositing money using you acc no
Payroll System
-designed to compute for the monthly or net salaries and deductions
Enrollment System
-often used by schools to automate the computation of tuition and other school feed
Flight Reservation System
-allows you to see the details or description of flights, costumers, bookings and reservations
Kinds of Electronic Database
Flat-file Database
-designed to put information in one table
Relational Data
-one or more tables are linked or related to other tables
Advantages:
Flexible
Makes faster access to records
Compact
Reduce Probability of Inconsistent data
Basic Concepts
Table
-where info in a database is organized and stored. It contains information about a specific topic
Fields
-a category or type of information found in a table (columns)
Records
-a set of fields for specific item. It represents one entry in a table (rows)