Course Intermediate 10953
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 17022
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 10718
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.
Migrate database to test Laravel's schema
2023-08-26 17:09:54 0 2 430
Rewrite the title as: Display the data in the MySQL database table as an HTML table on the web page
2023-08-20 14:48:09 0 2 569
2023-08-14 19:11:53 0 1 562
How to run a SQL file containing multiple databases (schema) from Mysql shell?
2024-03-29 10:04:36 0 1 281
2024-03-20 00:15:39 0 1 399
Course Introduction:数据库的设计范式是数据库设计所需要满足的规范,满足这些规范的数据库是简洁的、结构明晰的,同时,不会发生插入(insert)、删
2016-06-07 comment 0 1039
Course Introduction:The three major database paradigms (NF): When designing a relational database, follow different normative requirements to design a reasonable relational database. These different normative requirements are called different paradigms. Various paradigms present sub-norms, the higher the The less redundant the paradigm database is. However, sometimes blindly pursuing paradigms to reduce redundancy will actually reduce the efficiency of data reading and writing. At this time, it is necessary to reverse the paradigm and use space to trade time. It can be roughly understood as the level of a certain design standard that the table structure of a data table conforms to. 1NF means that the columns of the table are atomic and cannot be decomposed, that is, the column information cannot be decomposed, as long as the database is a relational database (mysql/oracle/db2/informix/sysbase/sq
2024-07-20 comment 0 349
Course Introduction:Database normalization: is the process of organizing data in a database to reduce redundancy and improve data integrity. Here’s a quick overview of the key normal forms, with examples. 1. First Normal Form (1NF) Objective: Ensure each column contain
2024-08-31 comment 0 1117
Course Introduction:Normalization is a process of eliminating flaws in poorly designed databases. A poorly designed database is inconsistent and creates problems when information is added, deleted, or updated. The following are the key steps of database normalization in the database design process: Resolving database exceptions Normalized forms, namely 1NF, 2NF, 3NF, BCF, 4NF and 5NF, eliminate all insertion, update and delete exceptions. Insert exception occurs when you try to insert data from a record that does not exist. Deletion exception means that data is deleted, but due to poor database design, other records are also deleted. Eliminating Data Redundancy Storing the same data item multiple times is called data redundancy. Normalized tables do not suffer from data redundancy. Data dependencies The data is stored in the correct tables and ensures normalization. number
2023-09-11 comment 0 826
Course Introduction:With the rapid growth of real-time data and the continuous development of applications, database paradigm design is becoming more and more important in PHP programming. It can help you optimize data structure, reduce data complexity, improve data processing efficiency, and reduce the risk of data errors. . To this end, in this article, we will introduce some best practices in PHP programming to help you achieve a normalized database design. First Normal Form (1NF) First Normal Form refers to setting each field in the data table to an atomic value, that is, ensuring that each cell contains only one value, thus avoiding
2023-06-22 comment 0 855