√在线天堂中文最新版网,97se亚洲综合色区,国产成人av免费网址,国产成人av在线影院无毒,成人做爰100部片

×

relational calculus中文什么意思

發(fā)音:   用"relational calculus"造句

例句與用法

  1. First , in this paper , a paraconsistent relational data model and its algebraic operators are introduced briefly . then , paraconsistent relational calculus based on this model is discussed and domain relational calculus for paraconsistent database is presented
    本文首先簡要介紹了次協(xié)調(diào)關(guān)系數(shù)據(jù)模型及其代數(shù)運(yùn)算,并在此基礎(chǔ)上進(jìn)一步討論了次協(xié)調(diào)關(guān)系演算,提出了次協(xié)調(diào)關(guān)系上的域關(guān)系演算。

百科釋義

    Relational calculus consists of two calculi, the tuple relational calculus and the domain relational calculus, that are part of the relational model for databases and provide a declarative way to specify database queries. This in contrast to the relational algebra which is also part of the relational model but provides a more procedural way for specifying queries.
    詳細(xì)百科解釋

相關(guān)詞匯

其他語言

相鄰詞匯

  1. relational algebra 什么意思
  2. relational algebra command interface 什么意思
  3. relational approach 什么意思
  4. relational associative processor 什么意思
  5. relational balance 什么意思
  6. relational character 什么意思
  7. relational checking 什么意思
  8. relational coiling 什么意思
  9. relational complete language 什么意思
  10. relational completeness 什么意思
桌面版繁體版English

相關(guān)閱讀

Copyright ? 2025 WordTech Co.