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How to dump and pour text data in ORACLE

Dec 15, 2016 am 10:10 AM

ORACLE database system global zone

Dec 15, 2016 am 10:08 AM

Logical structure in ORACLE database

The logical structure of ORACLE is composed of one or more table spaces. A database is divided into one or more logical units, which are called table spaces.

Dec 15, 2016 am 10:07 AM

Detailed explanation of linux awk command

Awk is a powerful text analysis tool. Compared with grep search and sed editing, awk is particularly powerful when it analyzes data and generates reports. To put it simply, awk reads the file line by line, slices each line using spaces as the default delimiter, and then performs various analysis and processing on the cut parts. There are 3 different versions of awk: awk, nawk and gawk. Without special explanation, it generally refers to gawk. Gawk is the GNU version of AWK. Awk's name comes from the first letters of the surnames of its founders, Alfred Aho, Peter Weinberger and Brian Kernighan. Actually AWK's

Dec 15, 2016 am 10:05 AM

Detailed explanation of Netstat command

(netstat -na command), this article mainly talks about the netstat tool under Linux, and then explains in detail the various network connection statuses.

Dec 15, 2016 am 09:59 AM

Network basics and Linux network configuration one Detailed explanation of ifconfig, route, netstat commands

OSI model and TCP/IP protocol cluster 1. First of all, TCP/IP is a protocol cluster; OSI (Open Systems Interconnection) is a model, and TCP/IP was developed before OSI. 2. TCP/IP is a hierarchical protocol made of some interactive modules, each of which provides specific functions; OSI specifies which function belongs to which layer.

Dec 15, 2016 am 09:56 AM

In-depth understanding of PHP arrays (traversal order)

People often ask me, if a PHP array is accessed using foreach, is the order of traversal fixed? In what order should it be traversed?

Dec 15, 2016 am 09:55 AM

Introduction to the concept of PHP object Object

For example, an employee management application might include an EmPloyee class. This class can then be used to create and maintain specific instances, such as Gonn and Sally.

Dec 15, 2016 am 09:53 AM

PHP object-oriented field declaration and use

Fields are properties used to describe certain aspects of a class. It is very similar to a regular PHP variable, with some subtle differences, which are described in this section. This section also discusses how to declare and use fields, and the next section explains how to use field scopes to restrict access.

Dec 15, 2016 am 09:51 AM

Field object-oriented