agglomerate
发表于 2025-3-26 22:44:30
hout any constraint specifications. This second DDL chapter goes into more detail about some data definition aspects, although it is still not intended as a complete reference on the topic. (Discussion of the . command alone covers more than 100 pages in the Oracle Database documentation.)
畸形
发表于 2025-3-27 01:28:36
ept of views. The second section discusses how to use the . command to create views. In the next section, you’ll learn about the various ways you can use views in SQL, in the areas of retrieval, logical data independency, and security.
漫不经心
发表于 2025-3-27 06:26:09
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犬儒主义者
发表于 2025-3-27 12:18:50
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incite
发表于 2025-3-27 16:14:14
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否认
发表于 2025-3-27 18:49:38
Relational Database Systems and Oracle, relational database systems in general, followed by an introduction to the Oracle software environment. The main objective of this chapter is to help you find your way in the relational database jungle and to get acquainted with the most important database terminology.
mediocrity
发表于 2025-3-28 00:57:50
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窗帘等
发表于 2025-3-28 04:44:10
Data Definition, Part I, Therefore, this chapter covers only the data definition basics, such as how to create simple tables using standard datatypes. In Chapter 7, we will revisit data definition with SQL and explore topics such as indexes, synonyms, and constraints.
fastness
发表于 2025-3-28 09:25:45
Data Definition, Part II,hout any constraint specifications. This second DDL chapter goes into more detail about some data definition aspects, although it is still not intended as a complete reference on the topic. (Discussion of the . command alone covers more than 100 pages in the Oracle Database documentation.)
头盔
发表于 2025-3-28 10:38:35
Views,ept of views. The second section discusses how to use the . command to create views. In the next section, you’ll learn about the various ways you can use views in SQL, in the areas of retrieval, logical data independency, and security.