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,,What is the design principle of nosql? Is there a paradigm similar to that of relational databases?
I also found an article:Http://www.cnblogs.com/AllenDang/p/3507821.html! CommentsBasically, the design idea is what I mentioned
Tags: Step data scientist Architecture agreement New Hope story led meaning avoidanceWhy SQL is beating NoSQL, what this means for future data: http://geek.csdn.net/news/detail/238939 The translator notes: After years of silence, today's SQL is coming back. What's the reason? What
high, and the lack of uniform query syntax.
Graph Database (graph)
Neo4j, Infogrid, Infinite Graph
Social networks, referral systems, and more. Focus on building a relationship map
Graph structure
Using graph structure correlation algorithm. such as shortest path addressing, N-degree relationship lookup, etc.
Many times need to calculate the entire graph to get the information needed, and this structure
Nosql is a broad definition of non-relational data storage. It broke the long-term unification of the relational database and acid theory. Nosql data storage does not require a fixed table structure and usually does not have connection operations. It has incomparable performance advantages over relational databases in
of traditional relational databases to address the performance of poor, and design use is not convenient.
Object storage
Db4oVersant
The database is manipulated by object-oriented syntax, and data is accessed through objects.
XML database
name implies, data is stored in columns. The biggest feature is the convenient storage of structured and semi-structured data, easy to do data compression, for a column or a few columns of the query has a very large IO advantage.Document storageMongodbCouchdbDocument storage is typically stored in a JSON-like format, and the stored content
Label:1. Relational databaseRepository for permanent data storagePHP variables are only temporary storage space "use memory space" to save variables during PHP script execution.Relational database: Use the relationship between the two to describe the entity information. "Using two-dimensional table field names and fields values to describe""Relational databases are not meant to use foreign keys to construct two tables as associations, but rather to im
If you are proficient in NoSQL, what are the best solutions for this situation ?? The database of website A has A very simple table xx, field: id: Auto-incrementing key: value is the only character value: the value is any string. Website B needs to read data from Table xx in
What is the comparison between nosql and relational databases?
Advantages:
1) Cost: nosql databases are simple and easy to deploy. They are basically open-source software and do not need to be purchased and used at the same cost as Oracle, which is cheaper than relationa
Proficient in NoSQL to see if there is any good solution to this situation? The database of website A has A very simple table xx, field: id: Auto-incrementing key: value is the only character value: the value is any string. Website B needs to read data from Table xx in websi
Do a year's freshman year project, for relational database structure or some understand, sometimes still feel that the two-dimensional table is not very comfortable. After reading an article, there is a preliminary understanding of NoSQL (Https://keen.io/blog/53958349217/analytics-for-hackers-how-to-think-about-event-d
Tags: mariadb acl redis ora Two kinds of memory cache memory Detail1, first of all, from the database type classification, MySQL, MariaDB, SQL Server These 3 kinds belong to the relational database.NoSQL is a non-relational database and is considered a database revolutionist
The main characteristic of Cassandra is that it is not a database, but a distributed network service composed of a bunch of database nodes, a write operation to Cassandra will be copied to the other nodes, and the read operation to Cassandra will be routed to a node to read. For a Cassandra cluster, scaling performance
SSDBA high-performance NoSQL database that supports rich data structures to replace Redis.Characteristics
100 times times the capacity of Redis instead of Redis database
LevelDB network support, using C + + development
Redis API compatible, support for Redis clients
Suitable for storing collection data, such as list, hash, zset ...
The la
Key-Value Store databaseTemporary: as memcached. The temporary key-value database stores the data in memory, which in two cases results in the loss of data, the first is the power outage, but the data content exceeds the memory size. The benefits of this treatment are very fast.Permanent type: such as Tokyo Tyrant, flare and RomaThe two are both types: Redis. Redis first data in memory, and then meet certai
type of nosql has a lot to choose what type of NoSQL to use as our storage? This is not a very good answer to the question, there are many factors that affect our choice, and there may be a variety of choices, with the business scenario, changes in requirements may be selected. We often need to consider the following
Tags: relational data table NoSQL database L database Combat div operation Field
Why NoSQL is produced:
The fact that relational databases are not good at doing so is the reason why No
In-depth analysis of NoSQL database distributed algorithms (graphic details), nosql text
Although the NoSQL movement has not brought about fundamental technological changes to distributed data processing, it still triggers overwhelming research and practices on various protocols and algorithms. In this article, I will
the time, I later on the Internet access to more information, found that my understanding is only partial. (Even the author's understanding is wrong, such as the author of 2.1.5 The consistency of the simple understanding of the role of check constraints) in fact, the primary foreign KEY constraints, check constraints are the scope of database integrity (why
database is better suited to the case where data is organized through relationships, and a dedicated text search system is better suited to situations where real-time search is required.Here, let's look at the main advantages and differentiation features of the SQL system:*
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