Oracle Sql Test Questions And Answersintroduction to oracle sql and pl answersoracle quiz answersoracle exam answersmurachs oracle sql and pl answersDownload
1_ORACLE 面试题及其答案(1_ORACLE interview questions and answers) 1_ORACLE 面试题及其答案(1_ORACLE interview questions and answers) 21. How do I determine the time zone for the database? Answer: SELECT, DBTIMEZONE, FROM, DUAL; 22. Explain the usefulness of GLOBAL_NAMES as TRUE Answer: ...
These were some of the Oracle interview questions and their answers to help you pass your interview.Whether you are a fresher or an experienced professional, these questions cover basic Oracle interview questions, advanced Oracle interview questions, and Oracle technical interview questions. Preparing wi...
绑定变量是相对文本变量来讲的,所谓文本变量是指在SQL直接书写查询条件, 这样的SQL在不同条件下需要反复解析,绑定变量是指使用变量来代替直接书写条件,查询bind value在运行时传递,然后绑定执行。 优点是减少硬解析,降低CPU的争用,节省shared_pool 缺点是不能使用histogram,sql优化比较困难 10. 如何稳定(固定)执行计划...
数据库面试题(SQL+ORACLE) 数据库基础(面试常见题) 一、数据库基础 1. 数据抽象:物理抽象、概念抽象、视图级抽象,内模式、模式、外模式 2. SQL语言包括数据定义、数据操纵(Data Manipulation),数据控制(Data Control) 数据定义:Create Table,Alter Table,Drop Table, Craete/Drop Index等...
数据库面试题目(二) 六:Databases Questions & Answers 1. What are two methods of retrieving SQL? 2. What cursor type do you use to retrieve multiple recordsets? 3. What action do you have to perform before retrieving data from the next result set of a stored procedure? Move the cursor ...
ORACLE 8i,9i 表连接方法。 ?一般的相等连接: select * from a, b where a.id = b.id; 这个就属于内连接。 ?对于外连接: Oracle中可以使用“(+) ”来表示,9i可以使用LEFT/RIGHT/FULL OUTER JOIN ?LEFT OUTER JOIN:左外关联 SELECT e.last_name, e.department_id, d.department_nameFROM employees e...
六:DatabasesQuestionsAnswers 1.WhataretwomethodsofretrievingSQL? 2.Whatcursortypedoyouusetoretrievemultiplerecordsets? 3.Whatactiondoyouhavetoperformbeforeretrievingdatafromthe nextresultsetofastoredprocedure? Movethecursordownonerowfromitscurrentposition.AResultSetcursoris ...
六:Databases Questions &am 51、p; Answers1. What are two methods of retrieving SQL?2. What cursor type do you use to retrieve multiple recordsets?3. What action do you have to perform before retrieving data from the next result set of a stor 52、ed procedure?Move the cursor down one ...
and Ask Tom. Visit Google and hunt around for advice. Take nothing on face value: test it yourself to destruction. Lurk here for a month or two, and try and pick up on the sort of questions being asked, and ask yourself how *you* would answer them. Then see what answers actually co...