Course Intermediate  11245

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17581

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11291

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：Paradigm: The English name is Normal Form. It was summarized by the British E.F. Codd (the ancestor of relational database) after he proposed the relational database model in the 1970s. Paradigm is the basis of relational database theory and is also the basis for our design of database structure. The rules and guidelines to be followed during the process. There are currently 8 paradigms that can be traced, in order: 1NF, 2NF, 3NF, BCNF, 4NF, 5NF, DKNF, and 6NF. Usually only the first three normal forms are used, namely: first normal form (1NF), second normal form (2NF),

2017-09-09 comment 0  3672

Course Introduction：Ouyi's transactions have returned to normal. As of December 2, 2023, all trading services of Eureka Exchange have returned to normal.

2024-03-02 comment 0  1019

Course Introduction：The normal temperature of the computer depends on the situation: 1. CPU, the normal temperature is about 25 to 75 degrees; 2. The motherboard and hard disk, usually the normal temperature is between 40 and 60 degrees; 3. The graphics card, the temperature of some graphics cards It is normal to have a temperature between 40 and 50 degrees. For some graphics cards, it is normal to have a temperature of 70 to 80 degrees.

2021-06-22 comment 0  63711

Course Introduction：If the computer cannot start normally, first check whether the power supply is normal and whether the monitor switch is turned on; secondly, if the computer cannot be started due to computer failure, open the case to see if there are any excess metal objects, and finally check whether the CPU is working normally.

2019-06-13 comment 0  16140

Course Introduction：5NF (Fifth Normal Form) is also known as item joining paradigm. If a relation is 4NF, it is in fifth normal form (5NF) and does not losslessly decompose into smaller tables. You can also consider the relationship to be 5NF if the candidate keys are. Every connection dependency in it is implicit. Example The following relationship violates normalized fifth normal form (5NF) - EmpNameEmpSkillsEmpJob (assigned jobs) DavidJavaE145 John JavaScriptE146 Jamie jQueryE146 Emma JavaE147 The above relationship can be decomposed into the following three tables; therefore, it is not in 5NF - EmpNameEmpSkills DavidJava JohnJavaScript

2023-09-18 comment 0  1249