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I advise you to dispel this thought, you can't learn anything in a year and a half. That's only possible unless you stay at home all day researching! It's hard to learn.
Besides, is your family willing to let you stay at home all day to learn how to use a computer? It's not easy to find a suitable job if you work and study at the same time, and besides, it's almost impossible to find a "job of no more than 44 hours a week" in a remote city in the south. None of the units took the Labour Code into account.
The Labor Bureau is also for white-collar workers (wealthy people).
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php+mysql is a popular tool that has been proven to work well with applications.
In addition, this self-study is not something that can be mixed up in a year and a half, and it is not easy to learn.
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MySQL is open source, which means it's free. MSSQL is Microsoft's. MySQL is relatively small, but it runs very efficiently.
You don't have to learn PHP to learn MySQL, and MySQL and JSP work well together. mssql and. Net is better to cooperate, after all, it's a family.
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The differences between SQL and MySQL are:1. Essentially:
SQL is a database language with a standard and equivalent to C language; Whereas, MySQL is a DBMS, database management system, which is a database software or application.
2. Purpose:
SQL is used to access, update, and manipulate data in a database; Whereas, MySQL is an RDBMS that allows to keep the data present in the database.
3. Update:
The language of SQL is fixed, and the commands remain the same; MySQL can get frequent updates.
4. Usage:
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The differences are as follows:
1. Open source. MySQL is an open-source relational database management system (RDBMS); Whereas, sqlserver is not open source, it is commercial.
2. Procedure. MySQL is primarily programmed in C and C++ programming languages. SQLSer is primarily programmed in C++, but there are some parts in C as well.
3. Platform. SQLSserver only supports Linux and Windows platforms and is mainly used for: .NET application or Windows project.
In contrast, MySQL supports many platforms, and it is mainly used for PHP projects or applications.
4. Grammar. MySQL syntax is a bit complicated; The sqlserver syntax is simpler and easier to use.
5. Execute the query.
In MySQL, once a query has been executed, it cannot be canceled halfway through. In SQL Server, you can cancel a query in the middle of an execution.
6. Storage engine.
In MySQL, there are multiple storage engines that give developers more flexibility to use engines for tables based on performance. InnoDB is a popular storage engine. SQLSserver can use only one or only one storage engine.
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MySQL was developed in the mid-90s. One of the first open-source databases available on the market, there are many alternative variants of MySQL today, however, the differences between the variants are not important because they use the same syntax and the basic functionality remains the same.
The difference between MySQL and SQL is the sameMySQL is an RDBMS that allows to keep the data present in the database MySQL is pronounced "My SQL", but it is also known as "My Sequel" It is named after the co-founder Michael, the daughter of Widenius MySQL provides multi-user access to the database, on top of Linux distributions, this RDBMS system is compatible with PHP and Apache, Web, Server combination together using MySQL to query the database using the SQL language.
SQL is a language for manipulating databasesMySQL is one of the first open-source databases available on the marketSQL for accessing, updating, and manipulating data in databasesMySQL is an RDBMS that allows to keep the data present in the databaseSQL is a structured query languageMySQL is an RDBMS that uses MySQL to store, retrieve, modify, and manage databases, SQL is a query language, and MySQL is a database software.
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The difference between MySQL and SQL Server is mainly due to the applicability.
MySQL was developed by MySQL AB in Sweden, whereas SQL Server was developed by Microsoft Corporation. MySQL is a cross-platform, open-source database that supports a variety of operating systems, including Windows, Linux, macOS, etc. SQL Server can only run on the Windows operating system.
MySQL is open source, licensed under the GPL, and free to use and distribute. SQL Server is commercial software and comes with different licenses and licenses. MySQL has high performance and scalability when handling a large number of concurrent connections.
SQL Server also performs well, but requires a higher hardware configuration.
SQL Server has richer features for business applications, such as business intelligence, reporting, analytics, and more. MySQL also has many third-party tools and plugins in the open source community that can achieve similar functions.
Precautions for using MySQL
1. Database backup: Before using MySQL, the database should be backed up regularly to avoid irreparable losses caused by data loss or damage. You can use MySQL's built-in command line tool or a third-party tool to perform this open backup.
2. Security settings: When using MySQL, you should pay attention to security settings, including setting strong passwords, restricting remote access, and authorizing user permissions to avoid malicious attacks and data leakage.
3. Database design: When using MySQL, the database structure should be reasonably designed, including the fields, types, and indexes of the table, so as to improve query efficiency and reduce database load.
4. SQL statement optimization: When using MySQL, SQL statements should be optimized, including selecting appropriate query methods, avoiding subqueries, and avoiding using % operators, so as to improve query efficiency and reduce database load.
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The fundamental difference between MySQL and SQL Server is the basic principles they follow, and the narrow, conservative storage engine of Lingchong SQL Server is very different from the scalable, open storage engine of MySQL Server.
The fundamental difference between MySQL and SQL Server is the basic principles they follow.
The basic principle that follows them is their main difference: openness vs. conservatism. The narrow, conservative storage engine of SQL Server is very different from the scalable, open storage engine of MySQL Server.
While you can use the SQL server's Sybase engine, MySQL offers a wider variety of options, such as Myisam, Heap, InnoDB, and Berkeley doesn't fully support unfamiliar keywords, so it has fewer related databases than SQL Server. At the same time, MySQL also lacks some stored program features, such as the Myisam engine to support the exchange function.
The two most popular backend databases used by program developers today are MySQL and SQL Server. The most basic similarity between the two is that the data storage and the query system belong to the system. You can use SQL to access data from both databases, as they both support ANSI-SQL.
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