THE RELATIONAL CALCULUS In relational calculus, a query is conveyed as a formulary plan which contains a number of variables as well as an expression concerning these variables. It is up to the Database Management System (DBMS) to convert these non – technical queries into the same, well-organized, effective and procedural queries. The concept of relational calculus was first planned...

This question came from a small business owner. How do you develop an effective content marketing strategy? What are your rules? While there are no defined “rules” for building a content marketing strategy, it’s important to include these key components: Market Research and Analysis Valuable and Effective Content Develop Your Brand’s Voice Stay Consistent Analyze Your Results Market Research and...

The INTERSECTION Operators The INTERSECTION operation on table or relation A and B can be described as relation A INTERSECTION relation B designated as A ∩ B. In other words the rows or tuples which are common as well as belonging to both the tables or relations A and B only those rows or tuples are incorporated in the result...

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RELATIONAL ALGEBRA in Database Management System The relational algebra operators are mathematical functions which are castoff to recover queries by means of explaining a particular sequence of procedures on relations or tables and sometimes on even databases schema. With the help of relational algebra operators, each and every query is always created by a number of relational algebra operators, which...

B+ Tree Index Files Any B+ tree is the n-ary tree structure with a variable however over and over again large number of children per node used to be present. A B+ tree is consisting of a root, internal nodes as well as leaves. The root might be one or the other leaf node with two (2) or more (N)...