Heresy
发表于 2025-3-25 04:03:55
Distributed Databases,puter network. The distribution of data distinguishes a DDB from purely distributed processing systems, such as client-server systems described in chapter 1, though of course a DDB also involves distributed processing. The computer network can be a slow speed (relative to disk UO) wide area network
Cabinet
发表于 2025-3-25 09:45:28
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THROB
发表于 2025-3-25 12:36:23
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abject
发表于 2025-3-25 18:08:20
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繁荣地区
发表于 2025-3-25 20:28:36
PL/SQL,that is operations are performed on one or more tables and the result is a table. This gives SQL its nonprocedural flavour and is one of its major strengths. However, there are occasions when procedural processing of data may be required; in particular, we may wish to process data on a row by row basis.
aspersion
发表于 2025-3-26 03:13:27
Indexes and Storage Structure,etrieval operations on a database. In the section on storage structures we see how Oracle stores data on the disk (or other physical device). We will see however that a trade-off between effective storage utilisation and processing speed has to be made,. and like much of Oracle this area is tuneable.
铁塔等
发表于 2025-3-26 06:14:56
SQL*Forms, forms based, so the application can be defined by selecting options from menus and tables. One feature of SQL*Forms is a screen painter which by the use of function keys enables one to define headings and fields that make up the form in question.
Forage饲料
发表于 2025-3-26 11:19:36
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Lime石灰
发表于 2025-3-26 14:00:22
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贪心
发表于 2025-3-26 19:40:36
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