database design exercises and solutions

3 efficient Tags tag system database design solutions, tags design solutions Background Currently, mainstream blog systems and CMS all have a TAG Tag system, which not only enhances the structure of content links, but also allows articles to be distinguished by tags. Compare

The following content is excerpted from database solutions. Second Edition Key success factors in Database Design: The following guidelines are important for successful Database Design: · Communicate with users as much as possible

CodeIgniter Framework database transaction processing design flaws and solutions, CodeIgniter framework Cause: In one of our online businesses, using older versions of the CodeIgniter framework, there is a design flaw in the DB Class for the DB thing Processing Section, perhaps not a flaw. But he has influenced our pr

Books explaining database table design solutions have found that the biggest bottleneck for websites is the rationality of database table design. Please recommend books on this topic. Preferably related to mysql ., High-Performance MySQL Performance Tuning and architecture

This article mainly introduces the design defects and solutions for CodeIgniter framework database transaction processing. It can also be said that it is a small BUG. friends who use CodeIgniter transactions will encounter this problem, for more information, see the CI framework. Cause: In an online business, we use the older CodeIgniter framework. in the DB cl

Design defects and solutions for CodeIgniter framework database transaction processing, codeigniter framework Cause: In an online business, we use the older CodeIgniter framework. In the DB class, there is a design defect in the processing of DB transactions, maybe it's not a defect. However, it affects our production

Label:17th. Ideas and solutions for high-availability design Objective: The database system is the core part of an application system, if the whole system availability is guaranteed, the database system can not have any problems. For an enterprise-class system, the availability of a

Database optimization solutions and database solutions This article shares with you the database optimization solution for your reference. The specific content is as follows: 1. Use table partitionsPartitions physically separate data. Data in different partitions can be stor

avoid unexpected responses 1. Solve the customer's strange problem about functions: the PM's analysis and description capabilities should be reliable, and even dare to refuse. In the Requirement Description, describe and solutions from the user's perspective, and encourage users to participate in design and planning frequently. 2. Solve the function mismatch problem of each module: use the "scenario-dr

Tags: Database Oracle instance Data SelectThis instance runs through the oracle10g: First, the topic requirements The instructor's teaching information is stored in the schedule table:--------------------------------Teacherid WEEKDAY Hascourse---------- ---------- ----------1 2 11 3 12 1 13 2 11 2 1-------------------------------------------------------------------------------------------------Design the qu

Database practice full notes comprehensive exercises (1) query of teaching information and comprehensive exercise information This instance runs on Oracle10g through: I. Question requirements The instructor's teaching information is stored in the SCHEDULE table:-------------------------------- TEACHERID WEEKDAY HASCOURSE ------------------------------ 1 2 1 1 3 1 2 1 1 3 2 1 1 2 1 --------------------------

amount of data storage is too largeB: no strict data protectionC: No control over the integrity of the dataD: Data redundancy25. The dividing principle of hierarchical mode, network model and relationship model is | | d| |.A: Record lengthB: Size of FileC: The degree of complexity of the connectionD: The link between data26, the database management methods have | | d| |.A: Batch processing and file systemB: File systems and distributed systemsC: Dist

Tags: using cin to build database character type PNG write digital alt completeDatabase Job 14--comprehensive exercises (ii.) Feedback situationfirst, the homework request retelling1, the creation of the database Cpxs, saved in the e-packing directory to their own school number + surname first letter (Arabic numerals + capital letters) to create a folder , the in

failure, the static method is used as a temporary buffer policy scheme.Content of this section:This section describesQBlogFrom another perspective, the website optimization method is optimized based on database/table sharding.Basic description:Autumn GardenQBlogFrom the very beginning, the optimization work is based on code-based technical optimization solutions, one of the major reasons:Is the autumn Gard

, HTTP, FTP, POP3, and so on, so it is easy to use sniffer) class program listens to the plaintext user password on the network. Therefore, common methods such as SSH, SSL, S/key, and Pgp are used to transmit passwords and data to ensure security. 2.1.4 network security vulnerability scan Security scanning is an important technology in network security defense. Its principle is to perform one-by-one checks on the possible known security vulnerabilities of the target in the form of simulated atta

Three problems and solutions of website design and maintenance When we design a website, we often use visual tools such as: Frontpage,dreamweaver. With the site's construction, the site's update will inevitably appear some problems. I maintain my personal website, after three major changes: the first design, the use o

server configuration: 2-3 days3, MySQL master server configuration: 1-3 days4. Web Data Migration: 1 days5. Database Data migration: 2 days6, on-line test: 1-2 days7. Official Online: 2 daysKeepalived.conf! Configuration File for KeepalivedGlobal_defs {router_id Lvs_devel}Vrrp_instance Vi_1 {State MasterInterface eth0VIRTUAL_ROUTER_ID 59Priority 100Advert_int 1Authentication {Auth_type PASSAuth_pass 1111}virtual_ipaddress {61.61.61.100#61.61.61.101}}

is 2 hours, that is, 7,200 seconds)Error code, such as error codes, the JSON packet example is as follows (the example is AppID invalid error):{"Errcode": 40013, "errmsg": "Invalid AppID"}Reference article:https://www.zhihu.com/question/20863625http://blog.csdn.net/gebitan505/article/details/39178035Http://www.tuicool.com/articles/jQJV3ihttp://www.oschina.net/question/1433358_233412Http://www.lai18.com/content/944366.htmlhttp://blog.csdn.net/gebitan505/article/details/39178917http://blog.csdn.n

Design and detection of Software Website Security and Solutions Security Testing mainly involves the following aspects: 1. SQL injection (SQL injection) See the article "preventing SQL Injection solutions ". 2. Cross-Site scritping (XSS): (Cross-Site Scripting) See "XSS cross-site scripting solution" 3. csrf: (cross-site forgery request)4. email header injection

function to assign a value to flag2RD: Synchronous and asynchronous problems, since Ajax is an asynchronous function, this time alert (Window.flag); This code begins, and $.ajax ({This sentence runs in the background at the same time, the value of flag is confusing, this time need to async:false Ajax synchronization, there is the order of execution.)---March 15, 2016 10:26:10DAY05:Today solves a problem, very bad description, but the solution is to query the password is correct, query the