mongodb relational database

completed, different link modes can be obtained. That is to say, the decomposition method is not unique. The Minimum Redundancy must be achieved on the premise that the decomposed database can express the confidence of the original database. Its fundamental goal is to save storage space, avoid data inconsistency, improve the efficiency of relational operations,

Label:database table structure Design specification-Briefly, why is it, because the main point of view is from the original public account of an article, slightly added some of their own views.Who is going to design the database?Certainly is the concrete development engineer to carry on, develops schoolmate's words, first business familiarity degree is higher, second unifies Oo and Orm's thought, can have the good use

as an application developer, database applications are already extensive. You may have used relational data, such as MySQL, PostgreSQL, or you might have used document storage, such as MongoDB, or Key-value databases, such as Redis. Each database has its merits, and perhaps you are considering using a distributed

Label:A collection of all relationships that correspond to a relational model is called a relational database. In a relational model, relationships between entities and entities are expressed in relation to each other. For example, the relationships between teachers, students, courses, lectures, and learning in example

Redis is a high-performance key-value database. The emergence of Redis, to a large extent, compensates for the shortage of such key-value storage in memcached, and in some cases can complement the relational database well. It provides a python,ruby,erlang,php client and is easy to use. According to our general use of the Redis scenario should be this: In other

Tags: implementation mechanism originally page organizes tables based on free article content index ClustFollowing the book on SQL tuning (SQL tuning or SQL optimization) in the essentials of high-performance SQL tuning and case resolution, we talk today about one of the most important core mechanisms of SQL tuning technology and half of the work-index (index) in every major relational repository. We know that "high-performance SQL Tuning essentials a

Label:There are two kinds of database design models widely used in Data warehouse: Relational type and multidimensional type. It is generally believed that the relational model in the design method of Data Warehouse is "Inmon" method and multidimensional model is "Kimball" method. First look at the relational model, wh

Relational database BasicsThe 1th chapter about relational database management system1. Common Sql:mysql (small, free, simple, Oracle Company), SQL Server (Microsoft, charges,. NET, Large), ORACLE,DB22. Database Features: Reduce the redundancy of storage data; h

dom|odbc| Data | database Using ODBC to implement Domino and relational database interoperability Lotus Domino is one of the main development platforms for OA Systems today, Domino has a non relational database-a document database