Assalamualaikum dear Blog Readers,
Time goes by so fast that when I woke up this morning, Gosh, Its already week 7 of the semester to total of 14 weeks excluding the 1 week Chinese New Year holiday and final exam weeks. So yes, its gonna be very busy as for my planning in this week it self as bellows :
Welcome and welcome to Chapter 7 for we will be covering up about storing the organizational information and their databases.
Literally, information is everywhere in an organization and these information is stored in databases
What is databases?
It maintains the information about various types of objects (inventory), events (transactions), people (employees), and places (warehouses).
There are mainly 3 database models which includes :
1.) Hierarchical Database Model
Information is organized into a tree-like structure in such way that it cannot have too many relationships.
2.) Network Database Model
A flexible way of representing objects and their relationships/
3.) Relational Database Model
Stores information in the form of logically related two-dimensional tables.
Entity @ Attributes
Entity
A person , place , thing, transaction, or event about which information is stored.
Attributes
Characteristics or properties of an entity class.
Key @ Relationships
The primary key and foreign keys identify the various entity classes (tables) in the database
Primary Key
A field that uniquely identities a given entity in a table
Foreign Key
A primary key of one table that appears an attribute in another table and acts to provide a logicall relationship among the two tables.
THANK YOU FOR READING =D,
Integrating Information among Multiple Databases
Integration,
Allows separate systems to communicate directly with each other
- Forward Integration
Takes information entered in a given systems and sends it automatically to all downstream systems and processes.
-Backward Integration
Takes information entered into a given system and sends it automatically to all upstream systems and processes.
Forward & Backward Integration
Central Repository
Time goes by so fast that when I woke up this morning, Gosh, Its already week 7 of the semester to total of 14 weeks excluding the 1 week Chinese New Year holiday and final exam weeks. So yes, its gonna be very busy as for my planning in this week it self as bellows :
- 18th January 2017 - Operations Management TEST 1 at 8pm an I've only covered 3 chapters out of 5 chapters in total.
- 19th January 2017 - Legal Aspects Of Insurance TEST 1 at 8pm also haven't really study well upon four chapters because it is a fully reading subject ... : (
- 20th January 2017 - Malaysian Economics TEST 1 at 2.15p.m. right after the Friday prayers which I have 0% of my knowledge yet upon chapter 1 till 3.
- 21st January 2017 - "Do I Need To Recycle My Technology" event at Bandar Hilir, Melaka with my course mates which is like 75% in progress.
Welcome and welcome to Chapter 7 for we will be covering up about storing the organizational information and their databases.
Literally, information is everywhere in an organization and these information is stored in databases
What is databases?
It maintains the information about various types of objects (inventory), events (transactions), people (employees), and places (warehouses).
1.) Hierarchical Database Model
Information is organized into a tree-like structure in such way that it cannot have too many relationships.
A flexible way of representing objects and their relationships/
Stores information in the form of logically related two-dimensional tables.
Entity @ Attributes
Entity
A person , place , thing, transaction, or event about which information is stored.
Attributes
Characteristics or properties of an entity class.
Key @ Relationships
The primary key and foreign keys identify the various entity classes (tables) in the database
Primary Key
A field that uniquely identities a given entity in a table
Foreign Key
A primary key of one table that appears an attribute in another table and acts to provide a logicall relationship among the two tables.
Relational Databases Advantages
1.) Increased Flexibility
- Handle changes quickly and easily
- Provide users with different views
- Have ONE physical view
Physical view deals with the physical storage of information o a storage device (hard disk)
- Have MULTIPLE logical views
Logical view focuses on how users logically access information
2.) Increased Scalability and Performance
- Must scale to meet increased demand, while maintaining acceptable performance levels.
- Scalability
Refers to how well a system can adapt to increased demands
- Performance
Measures how quickly a system performs a certain process or transaction
3.) Reduced Information Redundancy
- Inconsistent is one of the primary problems with redundant
- Redundancy
The duplication of information or storing the same information in multiple places
4.) Increased Information Integrity
- Information Integrity
Measures the quality of information
- Integrity Constraint
Rules that help ensure the quality of information
- Relational Integrity
Constraint rule that enforces basic and fundamental information based constraints.
- Business Critical Integrity Constraint
Rule that enforce business rules vital to an organization's success and often require more insight.
5.) Increased Information Security
- Password
Provides authentication of the user
- Access Level
Determines who has access to the different types of information
- Access Control
Determines types of user access such as read-only access.
6.) Database Management Systems
- A software through which users and application programs interact with a database
THANK YOU FOR READING =D,
As at continuation,
Data-Driven Websites
This is an interactive website kept constantly updated and relevant to the needs of its customers through the use of a database.
1.) Development
Allows the website owner to make changes anytime all without having to rely on a developer or knowing HTML programming.
2.) Content Management
A static website requires a programmer to make updates. This adds an unnecessary layer between the business and its web content, which can lead to misunderstandings and slow turnarounds for desired changes.
3.) Future Expands
Having a data driven website enables the site to grow faster than would be possible with a static site. Changing the layout, displays, and functionality of the site is easier with a data-driven solution.
4.) Minimize Human Error
A well designed data driven website will have error-trapping mechanisms to ensure that required information is filled out correctly and that content is entered and displayed in its correct format.
5.) Cutting Production and Update Costs
A data driven websites can be updated and published by any competent data entry or administrative person. In addition to being convenient and more affordable, changes and updates will take a fraction of the time that they would with a static site
6.) More Efficient
With a data driven solution, the system keeps track of the templates so users do not have to do.
7.) Improved Stability
With a data driven website , there is a peace of mind knowing the content is never lost even if our programmer is.
Integration,
Allows separate systems to communicate directly with each other
- Forward Integration
Takes information entered in a given systems and sends it automatically to all downstream systems and processes.
-Backward Integration
Takes information entered into a given system and sends it automatically to all upstream systems and processes.
Forward & Backward Integration
Central Repository
No comments:
Post a Comment