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Explain the term - Handling Boundary Condition
These are some circumstances that to be handled in any system initialization and termination.
Concatenation operator Example : Printing name and job as one string as column name employees: SELECT ENAME||JOB "EMPLOYEES" FROM EMP;
Define Atom of domain relational calculus An atom has the outline 1 , x 2 , ... , x n > -> r , in which r stands for a relation on n attributes and x 1 , x 2 , ... , x n ar
Explain concept of inheritance with support of suitable example. Inheritance Inheritance is one of milestone of object-oriented programming language as it allows a creati
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
ER diagram on cosmetics
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
In a relational model how relations are termed? In a relational model, relations are termed as tables. (The term ‘relation’ is the technical name of the ‘table’ in RDBMS)
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
Illustrate how you can use QBE to perform logical AND and OR operation
Types Of Indexes One of the words used during the file organisation is the term index. In this part, let us describe this term in more detail. We find the index of keywords
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