Friday, February 21, 2014
Problem of chrome profile cannot open correctly
Do you have get this that message(upper picture)from chrome during you open Google chrome.
Below of solution that the problem.
Mac OSX
1. Quit Google Chrome.
2. Open Terminal.
3. Change directory (cd) t o /Users/{user}/Library/Application Support /Google/Chrome/Default
4. Delete Web Data and History files: rm -rf History*; rm -rf Web\ Data;
5. Start Google Chrome and t he error should be gone.
Windows 7
1. Quit Google Chrome.
2. Open Computer. 3. Navigate t o C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default \
4. Delete t he file named “Web Data”
5. Start Google Chrome and the error should be gone.
Tuesday, February 18, 2014
Sunday, February 16, 2014
Pengkalan Data (Database)
Note Download Here
CHAPTER 1
CHAPTER 1
DATABASE-SICS(SHARED,INTEGRATED COMPUTER STRUCTURE)
END-USER DATA-RAW FACT OF INTEREST TO END USER
METADATA(DATA ABOUT DATA)
·
->PROVIDE DESC OF DATA CHAR AND RELATIONSHIP
·
->COMPLEMENT AND EXPAND VALUES OF DATA
DBMS(COLLECTION OF PROGRAMS)
->MANAGES STRUCTURE AND CONTROL ACCESS DATA
ROLES AND ADVANTAGES
OF THE DBMS
ROLES
DBMS
·
-INTERMEDIARY BETWEEN USER & DB.
DB
STORE AS –FILE COLLECTION
·
-ENABLES DATA TO BE SHARED
·
-INTEGRATED MANY USER
ADVANTAGES OF DBMS
· - IMPROVED-DATA SHARING,DATA SECURITY,DATA ACCESS,DECISION
MAKING
· - BETTER DATA INTEGRATION,MINIMIZE DATA INCONSISTENCY
· -INCREASE END-USER PRODUCTIVITY.
TYPES OF DATABASE
NAME
|
DESC
|
SINGLE-USER DB
|
SUPPORT ONLY 1 USER (DEKSTOP DB)
|
MULTIUSER DB
|
-SUPPORT MULTIPLE USER (WORKGROUP AND ENTERPRISE)
|
CENTRALIZED DB
|
DATA LOCATED IN SINGLE SITE
|
DISTRIBUTED DB
|
DATA DISTRIBUTED ACROSS SEVERAL DIFF SITES
|
DATA WAREHOUSE
|
STORES DATA USED FOR TACTICAL/STRATEGIC DECISIONS
|
UNSTRUCTURED DATA
|
EXIST IN THEIR ORIGINAL STATE
|
STRUCTURED DATA
|
RESULT FROM FORMATTING
|
SEMISTRUCTURED DATA
|
HAVE BEEN PROCESS TO SOME EXTENT
|
XML
|
REPRESENT DATA ELEMENTS IN TEXTUAL FORMAT
|
WHY DATABASE
DESIGN IMPORTANT
DB DESIGN-FOCUS ON
THEIR DB STRUCTURE
WELL DESIGN DB
|
POOR DESIGN
|
FACILITATE DATA MANAGEMENT
GENERATE ACCURATE AND VALUABLE
|
CAUSE DIFFICULT TO TRACE ERROR
|
Friday, February 14, 2014
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