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Introduction to relational databases and non-relational databases

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650) this.width=650; "src=" Http://img.baidu.com/hi/jx2/j_0018.gif "alt=" j_0018.gif "/> Relational database is a database based on relational model . So what is a relational model? ? The model for storing data in rows and columns in a two-dimensional table is the relational database . For example : MySQL and the Oracle

650) this.width=650; "src=" Http://img.baidu.com/hi/jx2/j_0018.gif "alt=" J_0018.gif "/> Non-relational database(NoSQLthatnot-only SQL)can be a good complement to a relational database.with the InternetWebThe rise of the website,more and more shortcomings in relational database exposure,such as high concurrency and read-write to the database,efficient storage and access to massive amounts of data.the common non-relational database hasRedis,mongodb


Introduction to relational databases and non-relational databases

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