Basic Operation of Search and Sort: Search and Sort Algorithms for Large Sets
A key
Search algorithms focus on: sequential search, binary search, hash table search, binary sort tree search.
The sorting algorithm focuses on bubble sorting, insertion sorting, merge sorting and fast sorting.
Sequential lookup
Algorithmic description
Sequential lookup of linear tables suitable for sequential or linked storage.
Algorith ...
Posted by mrcodex on Sun, 28 Jul 2019 06:44:49 +0200
PostgreSQL Data Backup Strategy
Summary
After any database is built and ready for use, the first thing to be determined is the database backup strategy. Rational and planned backup is the key to data security.Here is a set of backup strategies designed for PostgreSQL database
WAL Archiving Strategy
wal log
The so-called wal is write ahead log. The history of all changes and o ...
Posted by nomanoma on Wed, 24 Jul 2019 12:43:39 +0200
Summary of nmap script usage
The basic introduction and basic usage of nmap have been submitted in the dark cloud knowledge base, and the details are more detailed, which will not be described in this article. Specific links: /tips/?id=2002
This article mainly explains the use of many scripts of nmap, especially when penetrating the intranet.
0x01 nmap Scanning by Script ...
Posted by Yaak on Mon, 22 Jul 2019 07:41:42 +0200
(Front-end) html and CSS CSS 17, the nature of floating
The Nature of Floating
1. Floating element delisting
Common labels are standard streams, which distinguish line blocks. If floating attributes are set to elements, elements will be separated from table quasi-streams. Elements can be set height and ranked in one row.
Underbid: Code_
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitio ...
Posted by TowerOfPower on Mon, 22 Jul 2019 06:48:45 +0200
Use of DBlink in Mysql
In practice, we may encounter tables that need to operate on other database instances, but do not want the system to connect to multiple libraries. At this point, we need to use data table mapping. Like DBlink in Oracle, anyone who has used Oracle DBlink database links knows that they can query data across instances. Similarly, Mysql's own FEDE ...
Posted by jhbalaji on Sun, 21 Jul 2019 12:06:05 +0200
springboot2+logback trampling trip to export logs to oracle Database
background
According to my blogging practice, first explain the background. In the company's system, our configuration files are divided into several parts. Different configuration files have different configuration contents. For the output of logs, different environments need to make different outputs. This is a premise. This article will talk ...
Posted by dumbass on Sun, 21 Jul 2019 04:57:50 +0200
Migrating from Oracle ASMLIB to ASM Filter Driver
ASM Filter Driver is a new function that can replace ASMLIB and udev settings. It can replace ASMLIB and manual settings of udev rules files, and most importantly, I/O Filter functions. The so-called I/O Filter function can reject all invalid I/O requests. The main function is to prevent accidental overwriting of the underlying disk of the ASM ...
Posted by ruiner17 on Fri, 19 Jul 2019 13:04:51 +0200
New features of Java 8 explore streamlined JRE details
Exploration of New Java 8 Features (VIII) Streamlined JRE Details
https://my.oschina.net/benhaile/blog/211804
Streamlined version of api
This year's interviews with Ali, Netease and the American League, I have made an important discovery --> ___________.
Oracle has released the official version of Java 8 as schedule ...
Posted by gewthen on Thu, 18 Jul 2019 03:43:10 +0200
Two ways to set up Oracle DataGuard
Oracle introduced the ADG (Active DataGuard) read-only mode DataGuard in 11g version to replace the DG mode in 10g, which can only be mount ed but cannot be opened. There are also some improvements in the way of building. This article lists two different ways of building and their differences in detail.
General description of two DG constr ...
Posted by fredroines on Tue, 16 Jul 2019 18:34:20 +0200
34.C# Calls packages in Oracle
In the previous article, we introduced the method of creating PLSQL package. This paper introduced the method of calling stored functions and stored procedures in packages in C. Taking get_emp_func function encapsulated in emp_pack ages as an example, we introduced the method of calling this function in C.
First, emp_pack inclusions are define ...
Posted by Supernovas on Sun, 14 Jul 2019 21:43:29 +0200