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软件类型:国外书籍 软件分类:SQL Server 授权方式:免费版 界面语言:英文 软件大小:2488KB 运行环境:Win9x,NT,2000,XP,2003 软件等级:★★★☆☆ 发布时间:2006-12-16 下载次数:
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Developing Time-Oriented Database Applications in SQL电子书籍介绍
Developing Time-Oriented Database Applications in SQL
What's true today may not be tomorrow -- and data may only be useful if it
comes from a period with specific parameters. If you're wrestling with timerelated
monsters in DBMS, this book will help you understand them, and if
you're trying to tame those beasts with SQL, this book is a quick whip and
chair to chase them into their cages. For example, if you want to define a
period, you'll see that, while SQL3 supports periods, SQL-92 doesn't, and
you'll learn to use various pairs of instants instead.
Good, friendly writing, real-world situations, and plenty of code examples
make it fun to explore valid time versus transaction time, sequenced and nonsequenced
queries, sequenced updates, instants, intervals, now, and much
more. While Developing Time-Oriented Database Applications in SQL may
not make you Master of Time, it will probably make you a happier developer
during those minutes, hours, and days you're bringing temporal concepts to
data with SQL.
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