Managing Data & Knowledge ..

1] * Data is important because IT applications cannot be carried out without it.


* Due to various reasons such as:

1. Data is increasing continuously


2. Data security & quality & integrity

3. Storing in various systems

* Data Lifecycle

. Step 1: Data is collected.

. Step 2: Stored into a database.

. Step 3: preprocessed to fit the format of a data warehouse or data marts.




2] * There are various data resources:

. Internal :  Corporate databases.

. Personal : Users document their own experiences.

. External : Govermenta reports to commercial databases.




3] * There are advantages to the database approach:

1. Reduction of data isolation, redundancy and inconsistency.

2. Sharing among all users is possible.

3. Increase of data integrity & security& application independancy of each other.




* Data Warehouse: Historical data organized according to subject, to be accessible in a readily acceptable for analytical processing activities.



. There are benefits to using a data warehouse:

1. Improve business knowledge.

2. Provide competitive advantage.

3. Enhance customer service and satisfaction.

4. Facilitate decision making.

5. Help streamline business processes.



* Data governance: An approach to managing information across the entire organization.

. Unambiguous rules are followed for creating, collecting, handling and protecting information.



4] * Knowledge: contextual, relevant and actionable information. There are two types:


1. Explicit: Deal's with objective, rational and technical knowledge.

2. Tactic: Subjective, cognitive and experiential learning.