DDL什么意思？

The model consists of four layers - DDL, DML, DPL and CL.该模型分为数据定义层DDL、 数据操纵层DML 、 数据显示层DPL和控制层CL四层, 这里重点阐述了DDL和DML层.Availability of database definition language ( DDL ) and database manipulation language ( DML ) in DAO ...

The model consists of four layers - DDL, DML, DPL and CL.该模型分为数据定义层DDL、 数据操纵层DML 、 数据显示层DPL和控制层CL四层, 这里重点阐述了DDL和DML层.Note that supplying connection information does not initiate data definition language ( DDL ) generatio...

DDL的音标：...

Gaseous helium is inert, colorless, odorless, non corrosive, and nonflammable.气态氦极不活泼, 无色, 无嗅, 无腐蚀性, 不可燃.The application of gaseous ozone as ( biocide ) is a questionable practice.温室中使用臭氧气体防治病虫害是个错误.The rate of chlorosul...

n.不和，世仇，封地vi.长期不和，经常争吵...

n.（昆虫的）翼，翅...

The third bridge over the Yangtze Rive has also started construction.长江三桥也已动工.A monkey was playing in a tall tree rive.一只猴子正在河边的一棵高高的树上玩耍.My huckleberry friend, Moon rive And me.我的朋友, 月河,跟我....

“除锌”的英语可以翻译为：dezincification ...

n.海狸香（海狸性腺产生的一种浓味香料）...

opium的复数形式为：opiums...

A miracle is something that seems impossible but happens anyway.奇迹就是看似不可能，却发生了。If you wait, all that happens is that you get older.如果你等待，发生的只有变老。We didn't"fix" anything. It'll be seen as it happens.我们没做任何手脚，该什么...

minimizing的音标：minimizing的英式发音音标为：['mɪnɪmaɪzɪŋ]minimizing的美式发音音标为：['mɪnɪmaɪzɪŋ]...

discerption的音标：discerption的英式发音音标为：[dɪ'sɜ:pʃən]discerption的美式发音音标为：[dɪ'sɜpʃən]...

targets的音标：...

acerbophobia的音标：acerbophobia的英式发音音标为：[eɪsəbə'fəʊbɪə]acerbophobia的美式发音音标为：[eɪsəbə'foʊbɪr]...

铁素体化元素...

Micryphantidae的音标：...

the Federal Bureau of Investigation联邦调查局FBI demands its employees absolute allegiance to this bureau.联邦调查局要求其雇员对该局绝对忠诚.The auctioneer knocked the bureau down to a furniture dealer from York.拍卖者将写字台卖给从约克来的家具商....