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UGC NET Computer Science - 2025, 2026 GATE CS, GATE DA, TN TRB Assistant Professor, TN SET Computer Science, Exam Preparation, Study Material, Syllabus, #ugcnet #ugcnet2025 #ugcnettamil #shorts #trending #tntrb #trbcssyllabus #trbhandbook #trbexam #trbpreparation #tnset #gateexam DBMS, Database Management Systems, RDBMS, Relational Database Management Systems, Relational Algebra, Relational Algebra Operations, Fundamental Operations, Selection, Projection, Union, Set Difference, Cartesian Product, Rename, Derivative Operations, Intersection, Join, Division, SQL Clause, WHERE Clause, SELECT Clause, Except, Minus, Alias, Having clause, Count, Cross Join, Oracle, MySQL, SQLServer, SQLite SQL Query Relation, Table, Attributes, Columns, Tuples, Rows, Domain, Datatype, Schema, Table Definition SQL Quick Reference, SQL Quick Recap, SQL #database #databasemanagementsystem #databaseconcepts #dbms #databasemanagementsystems #sql #relationalalgebra #sqlinterviewquestions #sqlqueries #sqlcommands TN TRB Exam Preparation, TN SET Computer Science Study Material, UGC NET Computer Science and Applications Tamil, UGC NET Computer Science Textbooks, UGC NET Computer Science Reference Books, UGC NET 2025, UGC NET December 2025, UGC NET Computer Science Syllabus, UGC NET Computer Science Tamil, UGC NET Computer Science Study Material, UGC NET Paper 2 preparation , UGC NET Study Material, UGC NET PYQ, UGC NET 2025 Strategy, Paper 2 Computer Science, NTA NET, NET Exam, JRF Preparation, Assistant Professor, GATE Computer Science, UGC NET 2025, UGC NET Computer Science, TN SET Computer Science 2025, UGC NET Computer Science Syllabus 2025, GATE Computer Science 2026, GATE Data Science and Artificial Intelligence, Study Material, Exam Preparation, Syllabus, #assistantprofessor #gatecs #cspreparation #ugcnet #ugcnet2025 #ugcnettamil #ugcnetcs #ugcnetcomputerscience #ugccontentcreator #ugcnetexam #ugcnettips #ugcnetpreparation2025 #ugcnetpreparation #ugcnetpreparationstrategy #ugcnetrevision #ugcnetpyq #ugcnetpyqs #ugcnetpreviousyearpapers #ugcnetstudymaterial #gate2025 #gate2026 UGC NET Computer Science Syllabus, Tips, Review, Recap, Summary, Revised, Revision, Hacks, Important Topics, Preparation, UGC NET 2025, Computer Science and Applications #ugcnet​ #ugcnetcs​ #ugcnet2025​ #ugcnetcomputerscience​ TN SET 2025, Computer Science and Applications #tnset2025​ #tnset​ GATE Computer Science 2026, GATE Data Science and Artificial Intelligence 2026 #gatecs #gate2026 #gate2025 #gateda Semester Examination, University of Madras, Madras University, Anna University, #ssitlecturestamil @ssitlecturestamilதமிழ் Relational Algebra: Theoretical, procedural query language, specifies how to get a result by a sequence of operations using symbols. SQL: Practical, declarative query language, allows users to specify what they want without any description of how to get it. Relational Algebra SQL Description Relation Table Structure of data organized as set of rows (tuples) and columns (attributes). Tuple Row or Record A horizontal sequence of values within a table. Attribute Column or Field Property of the data, as a vertical part of the table. Domain Data Type The set of possible values of a column e.g., number, date. Schema Table Definition Structure of a table with its columns, constraints. Operations Selection σ WHERE Clause Filters rows based on a condition. Projection π SELECT Clause Selects a subset of columns from a table. Union ∪ UNION Combines all distinct rows from two union-compatible tables. Set Difference − EXCEPT or MINUS Returns rows present in the first table but not in the second. NOT EXISTS using correlated subquery. Cartesian Product × CROSS JOIN Combines every row of the first table with every row of the second table. Rename ρ AS Assigns alias name to a table or its columns in a query's result. Intersection ∩ INTERSECT Finds rows that are present in both of two union-compatible tables. Join ⨝ JOIN Combines two or more tables based on a condition. Supports all join types. Division ÷ HAVING + COUNT, EXCEPT Finds rows in one table that match or relate every row in a second table. Result of "for all" queries.