Demystifying SQL Retrieval Queries A Step-by-Step Breakdown
Feb 15, 2024 · 4 min read · database-programming sql-tutorial data-management relational-databases ·How Is SQL Query Retrieved, and Conceptually, What Is The Order oF Executing Each of The Six Clauses? SQL or the Structured Query Language described by Bowman, Emerson, & Darnovsky (1997) was proposed in 1970 by Dr. E. F. Codd at IBM and developed the SQL language over the next decade at research facilities and …
Read MoreUnveiling Attribute & Relationship Inheritance in EER Diagrams
Feb 13, 2024 · 3 min read · database-programming sql-tutorial data-management relational-databases ·The Mechanism of Attribute/Relationship Inheritance and Why it Useful The enhanced entity-relationship (EER) diagram includes the principles of the entity-relationship diagram with the addition of some other concepts as described by Tupper (2011). The additional concepts include subclasses and superclasses, …
Read MoreThe cursor and usage in embedded SQL The SQL language, by default, uses set-at-a-time processing. While this is used in most SQL queries, sometimes there is a need to loop through the set and execute a stored procedure or many different SQL statements for each row fetched. SELECT statements that return more than one …
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