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Chapter 1 Summary Notes
A computer is an electronic device that stores and processes data. A computer includes both hardware and software. Hardware is the physical aspect of the computer that can be touched. Computer programs, known as software, are the invisible instructions that control the hardware and make it perform tasks. Computer programming is the writing of instructions… Continue reading
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The Coder’s Catnip: Referential Integrity and Cascading in Data
Referential integrity is a fundamental rule in maintaining relationships in a relational database; it defines interactions between primary keys and foreign keys. It ensures data accuracy and reduces errors by linking such keys from different tables or within a single table. By enforcing referential integrity, fundamental operations such as insertion, updating, and deleting are appropriately… Continue reading
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