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In RDBMS, there are mainly three types of triggers: BEFORE, AFTER, and INSTEAD OF triggers. BEFORE triggers execute before the specified operation (INSERT, UPDATE, DELETE) on a table, allowing for validation or modification of the data before it is committed. AFTER triggers run after the operation has completed, often used for logging or enforcing business rules. INSTEAD OF triggers are primarily used on views, allowing the trigger to take action instead of the specified operation, providing a way to customize how changes to views are handled.
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Advantage and disadvantage of deductive database model?
Advantages of Deductive Database Languages· The database may hold some information as rules rather than tables (eg the 'forebear' relation we used in examples· Only need one language. RDBMS often use two languages, COBOL to code the program, and another language to interface with the user (SQL).· May do complicated analysis of dataDisadvantage· Less efficient
What are the steps to calculate a stepped cost?
To calculate a stepped cost, first identify the cost structure and the relevant ranges of activity levels that trigger different cost tiers. Next, determine the fixed cost and variable cost components within each range. Then, apply the appropriate cost for the specific level of activity by summing the fixed costs and the variable costs based on the units within each tier. Finally, ensure to account for any additional costs that may arise once activity exceeds defined thresholds.
What type of verb is comfortably?
Comfortably isn't any type of verb. It's an adverb.
What do all the fractinos equal?
Different fractions are equal to different values.
What does wagat mean?
"Wagat" is a term that can have different meanings depending on the context. In some cultures, it refers to a type of traditional dance or celebration. In other contexts, it may be used colloquially or as a slang term with specific local meanings. If you have a particular context in mind, please specify for a more accurate interpretation.
What are the different types of management systems?
1. relational database management system(RDBMS) 2. object Rdbms. 1. relational database management system(RDBMS) 2. object Rdbms.
What are different kinds of Database?
Different kinds of database are: * DBMS * RDBMS
What are the different RDBMS explain about one of them?
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What are the different types of constraints in RDBMS?
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What are the application of RDBMS?
what is rdbms and its application
Is foxpro a rdbms?
yes it is a rdbms
What type of database is Oracle?
Oracle is Relational database management System(RDBMS).
What is the difference between sybase and rdbms?
Sybase is a specific product and company that provides relational database management systems (RDBMS). RDBMS is a general term for a type of database management system that stores data in a structured format using tables. Sybase is one of the many vendors that offer RDBMS solutions.
What are type of trigger?
*static trigger *dynamic trigger *hold trigger
What is the locking mechanism ln RDBMS?
allows different types of resources to be locked by a transaction.
Is MySQL DBMS or RDBMS?
AnswerMySQL, like most modern Database Management Systems is based on the relational model. So it is a RDBMS (Relational Database Management System).
What are the subject topic for rdbms?
RDBMS is all about Relational Data Base Management System...
