A Simple Approach to SQL Joins in a Relational Algebraic Notation

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Provided by: International Journal of Computer Applications
Topic: Data Management
Format: PDF
Join is an operation in accessing the data from table if number of tables exceeds one. Whenever, the authors need the data which is not available from a single table, then it needs to necessitate using join operation. Sometimes join is required even if there is a single table. It all depends on the format in which they need to display the data in the user environment. In join processes, the accessing of the data depends on the joining conditions with different operators. Here, join condition is a must. For this purpose, generally they are using relational operators along with logical operators.
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