java ejb開發(fā) 程序4、語(yǔ)句alter table people add(phone_number varchar2(10)) 的作用是 A 修改表結(jié)構(gòu) B 為people表添加約束，約束名稱是phone_number C 向people表中添加一列，名稱是phone_number，數(shù)據(jù)類型是varchar2，長(zhǎng)度是10 D 上述答案均不正確 5、（ ）BLOB和CLOB的區(qū)別在于 A CLOB只能存放字符類型的數(shù)據(jù)，而BLOB沒(méi)有任何限制 B BLOB只能存放字符類型的數(shù)據(jù)，而CLOB沒(méi)有任何限制 C CLOB只能存放小于4000字節(jié)的數(shù)據(jù)，而BLOB可以存放大于4000字節(jié)的數(shù)據(jù) D BLOB只能存放小于4000字節(jié)的數(shù)據(jù)，而CLOB可以存放大于4000字節(jié)的數(shù)據(jù) 6、存儲(chǔ)過(guò)程從本質(zhì)上來(lái)講就是 A 匿名的PL/SQL程序塊，它可以被賦予參數(shù) B 命名的PL/SQL程序塊，它可以被賦予參數(shù) C 命名的PL/SQL程序塊，不能被賦予參數(shù) D 匿名的PL/SQL程序塊，不能被賦予參數(shù) 7、（ ）下列關(guān)于日期數(shù)據(jù)類型，哪一個(gè)語(yǔ)句是正確的寫法 A insert into test values( 9999-12-03 ) B insert into test values( 1999-03-02 ) C insert into test values(to_char(1999-06-03, yyyy/dd/mm )) D insert into test
標(biāo)簽： people phone_number varchar2 alter
上傳時(shí)間： 2013-12-26
上傳用戶：wendy15
計(jì)算矩陣連乘積 問(wèn)題描述 在科學(xué)計(jì)算中經(jīng)常要計(jì)算矩陣的乘積。矩陣A和B可乘的條件是矩陣A的列數(shù)等于矩陣B的行數(shù)。若A是一個(gè)p×q的矩陣，B是一個(gè)q×r的矩陣，則其乘積C=AB是一個(gè)p×r的矩陣。
上傳時(shí)間： 2015-03-25
上傳用戶：yulg
The application you are going to create mimics entering an employee into a database .The user wil be required to enter an employee s name and age
標(biāo)簽： application The entering employee
上傳時(shí)間： 2014-12-07
上傳用戶：ouyangtongze
Stantor is a Domotic project. It is a SCADA for the computer interface board K8055 (USB bus), K8000 (I2C bus) , X10 modules and also Webcam. It uses Browser WEB, I-mode and Wap2/Wap1, Apache,mySQL, PHP, javascript. It run with Linux 2.4 or 2.6 and XP
標(biāo)簽： interface computer Stantor Domotic
上傳時(shí)間： 2013-12-18
上傳用戶：sevenbestfei
This software aims to create an applet and panel tools to manage a wireless interface card, such as IEEE 802.11 cards. The development will focus on Linux, as this is the most accessible platform, but will expand as we get access to more platforms
標(biāo)簽： interface software wireless create
上傳時(shí)間： 2013-12-10
上傳用戶：semi1981
SRART: MOVX @R0,A 令A(yù)DC0809開始轉(zhuǎn)換 WAIT: JB OP2.0,ADC 檢測(cè)ADC0809轉(zhuǎn)換完成否？ CALL DISP 調(diào)用顯示子程序 JMP WAIT ADC:MOVX A,@R0 將轉(zhuǎn)換好的數(shù)據(jù)送入累加器 CALL L1 調(diào)用十進(jìn)制轉(zhuǎn)換子程序 MOV RI,#OFFH 顯示延時(shí)
上傳時(shí)間： 2015-03-26
上傳用戶：athjac
From your fax application view point it s a fax modem pool. From IP network view point it s a H.323 endpoint with T.38 fax support. From your view point it s a gateway between a fax application and IP network.
標(biāo)簽： point From view application
上傳時(shí)間： 2015-03-26
上傳用戶：lnnn30
A/D Converter Demonstration for the PIC18CXXX
標(biāo)簽： Demonstration Converter CXXX for
上傳時(shí)間： 2013-12-11
上傳用戶：ecooo
附錄A S語(yǔ)言說(shuō)明 A．1 字符集的定義 3數(shù)據(jù)類型定義
標(biāo)簽： 定義 語(yǔ)言 字符 數(shù)據(jù)類型
上傳時(shí)間： 2014-01-02
上傳用戶：com1com2
The JDOM build system is based on Jakarta Ant, which is a Java building tool originally developed for the Jakarta Tomcat project but now used in many other Apache projects and extended by many developers.
標(biāo)簽： originally developed building Jakarta
上傳時(shí)間： 2014-01-19
上傳用戶：xg262122
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