what is table index

1. EXPDPIMPDP SQLcreateuserzlmidentifiedbyzlm; Usercreated. SQLgrantconnect, resourcetozlm; Grantsucceeded. Large; Tablespacecreated. 1. EXPDP/impdp SQL create user zlm identified by zlm; User created. SQL grant connect, resource to zlm; Grant

The webtable object is used to test the table objects on the web page. The test on table objects mainly obtains data, such as the number of rows, number of columns, and content of cells in the table. Common Methods for webtable objects include

1. delete a table C: \> sqlplus Scott/tiger @ orcl SQL * Plus: Release 10.2.0.1.0-production on Sunday January 4 17:19:39 2009 Copyright (c) 1982,200 5, Oracle. All rights reserved. Connect:Oracle Database 10g Enterprise Edition Release

 1. Instructions on using expdp/impdp on the client   Some documents about Oracle expdp/impdp commands have been prepared. The links are as follows: Comparison between exp/IMP and expdp/impdp and some optimization items in

Use the Sample parameter of DataPump for data sampling. Data Pump Datapump is a convenient data logical backup and restoration tool launched by Oracle. Compared with the traditional Exp/Imp, Datapump provides many advantages in both performance and

To manage processes, the kernel must clearly describe what each process does. For example, the kernel must know the priority of a process, whether it is running on the CPU or blocked due to some events, the address space allocated to it, and the

Quick Start Toad Use Quick Start Directory A A summary of Toad function Two System Requirements Three Installation Guide Four Quick Start 1. Introduction to the usage of Schema browser 2. Introduction to the use of SQL editor 3. Introduction to

Some time ago in a migration of data pump and exp, found that the difference in efficiency is quite large. Here is an example of a simple comparison. First, compare the difference between exp general mode, exp direct path mode, and EXPDP three ways

Production Environment:Source database: RHEL + Oracle 11.2.0.3Target database: HP-UX + Oracle 10.2.0.4Requirements: Migrate part of the table 11.2.0.3-->10.2.0.4, if some tables within the migration scope already exist in the target library, then

The source code to be learned in this chapter is in Dict.h and dict.c two files. In the Java language, or in other languages that support associative arrays, the first thing we know is that associative arrays (dictionaries) are "arrays" of key-value,

HashMap is one of the most common data structures we use to write code in our daily lives, and it provides us with key-value forms of data storage. At the same time, its query, insert efficiency is very high.In the previous sort algorithm summary, I

Data pump (Data Pump) first defines oracle: "Oracle data pump technology enables very high-speed movement of data and metadata from one database to another. "It sounds awesome. I don't want to consider it for the moment. First, I would like to take

Address: http://sist.sysu.edu.cn/os-course/course/04-2-2.htm   In the previous section, you have learned how Windows 2000/XP organizes a 32-bit virtual address space. The following describes how to map these address spaces to real physical pages. We

Bitwise moving OPERATOR: Example: 3 1) Convert 3 to a binary number 0000 0000 0000 0000 0000 0000 0000 0011,2) Remove the two zeros at the upper (left) of the number. All the other digits are shifted to the left,3) Fill in the two vacant positions

Export:release 11.2.0.4.0-production on Sat June 11 01:00:02 2016Copyright (c) 1982, Oracle and/or its affiliates. All rights reserved.;;;Connected to:oracle Database 11g Enterprise Edition Release 11.2.0.4.0-64bit ProductionWith the partitioning,

This article mainly describes the actual solution to the destruction of MySQL table indexes, I saw information about the actual solution to MySQL table index destruction on the relevant website two days ago. I will share it with you today, hoping to

Learn the basics of one of the most common collection types and how to optimize your map for data specific to your application. Related downloads:· Jack's HashMap test.· Oracle JDeveloperG The collection class in Java.util

The optimizer for Pl/sql statement execution of an Oracle database has a cost-based optimizer (CBO) and a rule-based optimizer (RBO). The Rbo optimization method relies on a strict set of grammatical rules, and the statement written by rules,

Quick Start A summary of Toad function During the development of Oracle applications, accessing database objects and writing SQL programs is tedious and time-consuming, and the day-to-day management of the database requires a lot of SQL scripts to

Some time ago in a migration of data pump and exp, found that the difference in efficiency is quite large. Here is an example of a simple comparison. This article describes ways to improve the efficiency of IMPDP import. The test in the previous