半圆凿
发表于 2025-3-23 10:23:00
Database Systems,range of uses, all database systems have similar features. This chapter examines the issues that a database system must address and the capabilities it is expected to have. It also introduces the Derby and SimpleDB database systems, which will be discussed in this book.
冷淡一切
发表于 2025-3-23 16:44:23
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Infiltrate
发表于 2025-3-23 19:42:59
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浪荡子
发表于 2025-3-24 00:05:22
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名义上
发表于 2025-3-24 03:45:44
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乏味
发表于 2025-3-24 09:56:57
There Were Signs and I Missed Themask is called query optimization. The most efficient plan for a query can be several orders of magnitude faster than a naïve plan, which is the difference between a database engine that can respond to queries in a reasonable amount of time and a database engine that is completely unusable.
使服水土
发表于 2025-3-24 11:03:01
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刚毅
发表于 2025-3-24 17:28:13
JDBC,JDBC library consists of five Java packages, most of which implement advanced features useful only in large commercial applications. This chapter is interested in the core JDBC functionality found in the package .. This core functionality can be divided into two parts: ., which contains the classes
DEFER
发表于 2025-3-24 20:15:40
Disk and File Management,es and considers techniques (such as RAID) that can improve their speed and reliability. It also examines the two interfaces that the operating system provides for interacting with these devices—a block-level interface and a file-level interface—and proposes a combination of the two interfaces that
冷淡一切
发表于 2025-3-25 01:00:11
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