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发表于 2025-3-26 23:05:25
DBMS Toolkit functions such as storage and concurrency control. The interface comprises generally some database sub-language such as SQL. Around this standard interface most vendors offer a range of additional software tools for producing information systems. We call this collection the DBMS toolkit. Thus the c
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发表于 2025-3-27 01:10:50
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发表于 2025-3-27 08:46:42
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gusher
发表于 2025-3-27 09:56:02
Normalisationrinciples were originally formalised in terms of three normal forms: first normal form, second normal form and third normal form. The process of transforming a database design through these three normal forms is known as normalisation. By the mid-1970s third normal form was shown to have certain ina
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发表于 2025-3-27 15:21:27
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发表于 2025-3-27 20:51:48
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谦卑
发表于 2025-3-28 00:39:31
Physical Database Designical database design involves taking the results from the logical design process, fine-tuning them against the performance and storage requirements of some application and then implementing them in the mechanisms of some DBMS. With the rise of the relational data model, the emphasis has changed in t
吹牛需要艺术
发表于 2025-3-28 05:48:57
Textbook 1996Latest editiont concludes by reviewing two existing DBMS: one relational; the other object-oriented.Part three presents a discussion of the major techniques utilised in the design and implementation of database systems. The issue of administering data in organisations is also considered.Part four considers new ap
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发表于 2025-3-28 09:34:46
d. The part concludes by reviewing two existing DBMS: one relational; the other object-oriented.Part three presents a discussion of the major techniques utilised in the design and implementation of database systems. The issue of administering data in organisations is also considered.Part four considers new ap
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发表于 2025-3-28 10:44:31
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