- 相關代數(shù), 關系代數(shù)
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relational algebra中文什么意思
例句與用法
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- In relational databases , an operator in relational algebra
在關系數(shù)據(jù)庫中，關系代數(shù)用的一種運算符。 - It is implied by the associative and commutative transformations permitted in relational algebra
它由關系代數(shù)中允許的關聯(lián)轉(zhuǎn)換和交換轉(zhuǎn)換表示。 - Leap is an rdbms ( relational database management system ) implementing the relational algebra - a core part of relational database theory
Leap是一個rdbms ，它實現(xiàn)了關系代數(shù)，關系數(shù)據(jù)庫理論的一個核心部分。 - A clause is formalized as a relational algebra expression and evaluated by employment of relational algebra operations . 3 . the proof theory based on xml is presented
提出了利用關系代數(shù)運算實現(xiàn)xml查詢子句求值的方法，并證明了該方法的正確性。 - This course is designed to introduce graduate students to the foundations of database systems , focusing on basics such as the relational algebra and data model , query optimization , query processing , and transactions
課程描述本課程設計的目的是給研究生介紹數(shù)據(jù)庫的基礎知識，關注于基礎，如關系代數(shù)和數(shù)據(jù)模型，查詢優(yōu)化、查詢處理和事務。
百科釋義
In computer science, relational algebra is an offshoot of first-order logic and of algebra of sets concerned with operations over finitary relations, usually made more convenient to work with by identifying the components of a tuple by a name (called attribute) rather than by a numeric column index, which is what is called a relation in database terminology.
詳細百科解釋