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Main difference between read-only and update methods, What is the main diff...

What is the main difference between read-only and update methods? A read-only method does not affect the values of a variable in an object, whereas an update method may alter t

aggregate functions-data manipulation language, Aggregate functions ...

Aggregate functions Some of these functions are min, count, max, and avg. These functions help in getting consolidated information from a set of tuples. Example:

Describe the algorithm to draw the dependency graph, Describe the algorithm...

Describe the algorithm to draw the dependency graph?   Ans: Algorithm to draw Precedence Graph is like this: a.  For every transaction T i participating in schedule S, make

Define object-oriented database, Question : Object-Oriented Database (O...

Question : Object-Oriented Database (OODM) is defined as a logical data model that captures the semantics of objects supported in object-oriented programming. An Object-Oriente

Implementation of association as an object, Implementation of association a...

Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs

Write short notes on domain relational calculus, Write short notes on domai...

Write short notes on domain relational calculus   The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole

Develop a web site to present decision tree structure, I am going to develo...

I am going to develop a web site to present decision tree structure. For this, I want a web application with AJAX technology to connect the database and prepare the decision tree's

ER Diagram, Soccer player ER Diagram to Relational database schema

Soccer player ER Diagram to Relational database schema

What is alternate key, What is Alternate Key Alternate Key: This is t...

What is Alternate Key Alternate Key: This is the candidate key which is not taken as the primary key of the table. They are named so because although not the primary key, the

Coursework, ERD Diagram of Medical Recruitment Agency?

ERD Diagram of Medical Recruitment Agency?

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