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What is relationship instance ?
Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
Give an example of Object Representation For illustration, consider the implementation of a social security number within an employee object that is shown in Figure. The soci
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
he SQL query that will return the order number, quantity ordered, price each and total cost of an order (quantity * price each) from the order details table. Label the calculated c
I need a professional to prepare a database to collect and store basic information. The information can be basic info such as contact details etc. One requirement i have is f
What are the different strategies of implementation of the Statecharts? There are two strategies for implementation of state charts: i) Basic Implementation Strategy
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
what are the main characteristics of database
distributed quey processing
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
Domain Constraints Domain constraints are primarily formed for defining the logically correct values for an attribute of a relation. The relation allows attributes of a relatio
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