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.



Surat tawaran uthm

Surat tawaran link->Sila klik di sini

Sunday, February 16, 2014

Pengkalan Data (Database)

Note Download Here


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