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NORMALIZATION
The design database is required, so that we can have a database of compact and efficient in the use of storage space, quick and easy in the initialization manipulation (add, change, delete) data.
Database design process
Gather user needs / business, Develop a needs-based ER Model user / business, Convert E-R model to the set of relations (tables) normalize relations, to remove anomalies, Implemented to create a database with a table for each relationship that is normalize
DATABASE NORMALIZATION
Normalization process is the establishment of the database structure so that most of the ambiguity can be removed. The process of normalization is the process of grouping data elements into a table-table and show relationship entity. In the process of normalization is always tested in some cases, if there are difficulties at the time to add / insert, delete / delete, change / update, and read / retrieve on a Database Read the rest of this entry »
DFD is a logical data model or process that is made to describe the origin of the data and the destination where the data out of the system, where data is stored, the process that produces the data and the interaction between the data stored and the process is imposed on data.
DFD are often used to describe a system that already exists or the new system will be developed logically without considering the physical environment where the data flows, or where data are stored. Read the rest of this entry »
Problem (problem) is gap between the goal system and the actual system conditions, with the understanding why other systems failed to achieve the goals that the system has been determined previously. To know the things that have been what caused the failure of the system, the analyst should conduct an investigation before taking action to improve the system. With the investigation, an analyst will better understand the problem and the system flow more depth, even detect the problem is known but the problem still describe the size of the course.
The importance of developing information systems
Development of the system means a system set up a new, to change the old system as a whole or improve the existing system. This is caused by several factors, namely: Read the rest of this entry »
The Approach of Base Concept of System
System definition can be seen of two approach, which is procedure approach and component / element approach
- Procedure Approach
System is a job network of interrelates procedure, flock together to do anactivity or to solve a given target (Taken from fundamental of system analysis)
– Definition of Procedure is a medley in point of instruction step that enlightens (what) one that has to be worked, (who) one that works, (when) worked and (how) working it
- Element Approach
System is interacted a group of elements to achieve a certain goal.
Both of definition about system above is right because the definition of system is important role for studying about system definition approach. The approach of system is a group of elements or components or subsystem is a general definition of system itself.
For example: The company information system is consisting of several subsystems there are inventory subsystem, accounting subsystem, marketing subsystem and etc.
Goesary Documentation 