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Course Introduction：This tutorial demonstrates using Phinx, a framework-agnostic database migration tool, to manage database schema changes. It emphasizes the advantages of migrations over SQL dumps for team collaboration and version control. Key Benefits of Using Phi

2025-02-15 comment 0  1225

Course Introduction：What is dhcpsrvmigplugin.dll doing on my computer? DhcpSrvMigPlugin.dll is the Microsoft DHCP Server Migration Library. The Dynamic Host Configuration Protocol (DHCP) is a standardized networking protocol used by servers on an IP network to allo

2024-10-29 comment 0  412

Course Introduction：During Laravel development, it is often necessary to add virtual columns to the model to handle complex data logic. However, adding virtual columns directly into the model can lead to complexity of database migration and maintenance. After I encountered this problem in my project, I successfully solved this problem by using the stancl/virtualcolumn library. This library not only simplifies the management of virtual columns, but also improves the maintainability and efficiency of the code.

2025-04-17 comment 0  1007

Course Introduction：Character set and sorting rules issues are common when cross-platform migration or multi-person development, resulting in garbled code or inconsistent query. There are three core solutions: First, check and unify the character set of database, table, and fields to utf8mb4, view through SHOWCREATEDATABASE/TABLE, and modify it with ALTER statement; second, specify the utf8mb4 character set when the client connects, and set it in connection parameters or execute SETNAMES; third, select the sorting rules reasonably, and recommend using utf8mb4_unicode_ci to ensure the accuracy of comparison and sorting, and specify or modify it through ALTER when building the library and table.

2025-07-08 comment 0  509

Course Introduction：Methods to cloning Oracle databases include using RMANDuplicate, manual recovery of cold backups, file system snapshots or storage-level replication, and DataPump logical cloning. 1. RMANDuplicate supports replication from active databases or backups, and requires configuration of auxiliary instances and execution of DUPLICATE commands; 2. The cold backup method requires closing the source library and copying files, which is suitable for controllable environments but requires downtime; 3. Storage snapshots are suitable for enterprise-level storage systems, which are fast but depend on infrastructure; 4. DataPump is used for logical hierarchical replication, which is suitable for migration of specific modes or tables. Each method has its applicable scenarios and limitations.

2025-07-04 comment 0  419

Course Elementary  13747

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82260

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13131

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24578

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27436

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.