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- Is the redis database free?
- Redis is completely open source and free. It is an open source log-type Key-Value database written in ANSIC language, abiding by the BSD protocol, supporting the network, memory-based and persistent, and providing APIs in multiple languages.
- SQL 5979 2019-05-21 10:44:20
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- How to perform sql injection
- Methods for SQL injection: 1. Force an error; 2. Use non-mainstream channel technology; 3. Use special characters; 4. Use conditional statements; 5. Use stored procedures; 6. Avoid input filtering technology, etc.
- SQL 26739 2020-09-15 10:50:23
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- How to recover deleted data from sql database
- SQL database data recovery method: 1. Back up the transaction log of the current database [BACKUP LOG [database name] TO disk= N'backup file name' WITH NORECOVERY]; 2. Restore a full backup before accidental deletion; 3. Restore the database Restore to a point in time before accidental deletion.
- SQL 36681 2020-09-15 17:53:34
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- Is SQL easy to learn?
- In fact, everything has two sides. It will become easier as long as you work hard, believe in yourself. There are no shortcuts to learning, you can only rely on hard work, and if you are a programmer learning databases, you don’t need to know much, just know the basic operations. If you specialize in databases, you will need a lot more.
- SQL 11211 2019-05-17 16:56:35
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- how to learn sql
- How to learn sql: first you need to master certain basic knowledge of database; then you need to find some sql exercises to do; finally you need to learn advanced sql usage and techniques. sql is a database query and programming language used to access data and query, update and manage relational database systems.
- SQL 19011 2020-09-16 10:00:14
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- [SQL Learning] The connection between ordered index and order by
- Under normal circumstances, there are two implementation methods for order by. One is to automatically implement it using an ordered index. That is to say, using the orderliness of the ordered index does not require additional sorting operations. The other is to sort the results after selecting them. Using an ordered index is of course the fastest, but there are some restrictions. Let’s take a look at the test below.
- SQL 4593 2019-05-24 15:17:33
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- Xiaobai's second level of learning Oracle: Creation of the first Oracle database table
- Nowadays, in actual work, creating tables in the database is often used. In this article, the editor mainly shares with you how to create tables in the database through SQL statements. First, use plsql to connect to the oracle database and ensure that the following services are enabled.
- SQL 4663 2019-05-24 15:16:38
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- ORACLE user rights management
- Today I will take you to learn about ORACLE's user rights management. Creating new users can only be done by Oracle's DBA administrator.
- SQL 5707 2019-05-24 15:16:00
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