Grandstand
发表于 2025-3-23 12:55:11
The Roots of SQLThe relational model depends on a well-established branch of mathematics called set theory. This theory has led to the process of normalization to ensure that the entities described in the UFL design are well formed and that the relationships that exist between entities are correctly specified.
Hyperplasia
发表于 2025-3-23 15:31:52
SQLA method has been established whereby information about our scenario may be captured in a formal and methodical way. The object-oriented analysis methodology leads into using the Universal Modeling Language (UML), as a diagramming standard.
Detoxification
发表于 2025-3-23 21:22:35
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FOR
发表于 2025-3-24 01:18:34
Data SecurityInformation kept in databases underpins the viability of almost every governmental and commercial organization.
addition
发表于 2025-3-24 05:41:43
Further SQLUp until now, retrievals have been concerned with information exactly as it was entered into the database. Often, elements of this data have been chosen for the selection set through restrictions and projections (via SQL . statements). However, the selection set has always been a subset of the tuples held in the relation.
multiply
发表于 2025-3-24 06:40:53
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critique
发表于 2025-3-24 14:09:40
Client-Server ModelsThe first section of this book introduced the idea of separating the common functions for data storage and retrieval from the interface and business logic functions. This results in smaller application programs communicating with a database manager and requesting data access services.
细节
发表于 2025-3-24 16:58:35
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Irritate
发表于 2025-3-24 21:00:04
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Lipohypertrophy
发表于 2025-3-25 02:13:54
Data Modellingt follows object-oriented principles, it also contains a great deal of the specifications for the processing logic of the proposed system. Each of the object definitions shows the object’s data elements as well as the methods it contains.