Surrogate key-primary key
Describe a surrogate key and also explain the ideal primary key and illustrate how surrogate keys meet up this ideal?
Expert
The ideal primary key is numeric, short and fixed. A surrogate key is an exclusive, DBMS-supplied identifier intended to be employed as the primary key of a table. Furthermore, the DBMS will not permit the value of a surrogate key to be modified. The values of a surrogate key have no meaning to the users and are generally hidden on forms and reports. By design, they are numeric, short and fixed and therefore meet the definition of the ideal primary key.
Give a brief introduction of term the conformed fact?
MiniSQL Parser Relax; you don't have to write the parser! On the contrary, a complete parser and type checker for the MiniSQL language is provided with the skeleton code. This small subset of SQL includes the
Contrast a network and hierarchical database model?
Give a brief introduction of the term data mining and data modeling? In what manner both the termed are used?
Write down a short note on the difference between partial specialization and total specialization.
Describe the difference between complexType elements and simple elements?
Write down the latest error handling technique in SQL Server 2005?
What is meant by the snow flake schema?
Describe briefly the different methods of loading Dimension tables?
How can you save the Business Objects document that may be accessed by all the users in the workgroup mode?
18,76,764
1943881 Asked
3,689
Active Tutors
1425646
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!