Data Model

ADO. NET is the core of. NET interoperability with the database, and the Ado.net entity database enhances the ability of the. NET application to interconnect with the database, and we can easily strongly type data interoperation with the underlying database through the Ado.net Entity Data model. Greatly facilitates the design personnel, thus also enhances the database operation security. A very special problem has recently been encountered when using the domain data service to siverlight [the results in the application are not the same as the results of the database], after repeated experiments, finally found ...

Scalable distributed Relational Cloud database scheme Wang Minwudi Chong Zhu Zefei Li Renwang analyzing the base of various relational and database to meet the requirement of high concurrency and high availability of cloud database Based on the convenience and scalability of relational data, a scalable relational cloud database scheme is proposed. This scheme presents a new system architecture. Database read-write process data merging process data model and structure and storage and analyzing the bottleneck of its system architecture theory finally, the data consistency availability and online running performance are analyzed and the results show that this scheme ...

Setting security controls at the data level ensures that specific groups of users can access only specific data that falls within their purview, thereby maximizing access to sensitive data. Framework Manager is Cognos modeling tool when building http://www.aliyun.com/zixun/aggregation/14208.html in Framework Manager "> In the process of data model, we can introduce different ...

Research on the service encapsulation technology of software resources in cloud manufacturing environment Beijing Jiaotong University Tang Hong main achievements are as follows: (1) A software resource architecture framework based on software resources is proposed. In the cloud manufacturing environment, the cloud manufacturing resources include making hard resources and soft resources, and software resources are the basic tools for the establishment and transmission of models, data and knowledge in soft resources, and are the basis of product design. This paper takes the software resources of design phase as the object of study, and establishes the software resource Architecture framework with software resources as the main body. (2) The three-dimensional data model of software resources is established. According to software Resources ...

This article will go beyond the well-known details and explore the less obvious details related to Cassandra. You will examine the Cassandra http://www.aliyun.com/zixun/aggregation/14208.html "> Data model, storage mode design, architecture, and potential surprises associated with Cassandra." In the database history article "What Goes Around comes Around", Mi ...

Metamodel a model for creating a compatible SQL database domain. A meta model is a model that contains classes that represent a database (schema, table, column, relationship) and run the Database (query) interactive structure in the same way as sql/linq. In short, it is a http://www.aliyun.com/zixun/aggregation/14208.html "> Data Model" in databases and other data stores. The meta model can query the database for different data stores, CS ...

MCKOIDDB is a distributed database system for applications that need to support low latency, random access (read, write) queries on a dataset. The software provides data http://www.aliyun.com/zixun/aggregation/14290.html through network clustering and client APIs > Storage Management systems for accessing and querying data. The MCKOIDDB system can extend, delete, or add resources to the network and flexibly apply the design of the logical data model of the application.

Metamodel a model for creating a compatible SQL database domain. A meta model is a model that contains classes that represent a database (schema, table, column, relationship) and run the Database (query) interactive structure in the same way as sql/linq. In short, it is a http://www.aliyun.com/zixun/aggregation/14208.html "> Data Model" in databases and other data stores. The meta model can query different data stores in the database, CSV ...

Jailer 3.6.3 This version fixes an error that http://www.aliyun.com/zixun/aggregation/14208.html "> Data model changes do not affect the browser of the table." Jailer is a powerful intelligent data extraction tool that can support applications such as DB2, Firebird, and Derby. Note: This software operation requires the support of the "Java" Platform! Download Address: H ...

Metamodel a model for creating a compatible SQL database domain. A meta model is a model that contains classes that represent a database (schema, table, column, relationship) and run the Database (query) interactive structure in the same way as sql/linq. In short, it is a http://www.aliyun.com/zixun/aggregation/14208.html "> Data Model" in databases and other data stores. The meta model can query different data stores in the database, CSV ...

Baigostudio posted on: March 25, 2015-------------------v1.1.1-------------------2015-03-25 allows each page to be set to show the number of 2015-03-20 Improve the background interface password update JS, reduce password error probability baigovalidator upgrade to v0.1.0 2015-03-19 repair article data model, the installation is missing a table ...

Research on the construction of medical and health data center based on HBase and the synchronization of heterogeneous database Fang Shiwei to determine the data model, this paper puts forward the idea of HBase C-o-r modeling based on the E-R modeling of relational database, Then comprehensive analysis of Health department promulgated medical and Health metadata standards and the actual situation of some health institutions to achieve health information HBase Data Center construction. In order to realize the synchronization of data transparently to data center in heterogeneous relational database of medical institutions, the following schemes are proposed. First of all, in the data format proposed heterogeneous database production ...

March 25 News, Peer-to-peer Network loan platform Pat Loan yesterday officially released wind control system "Magic mirror Wind Control system." It is reported that the camera of the release of the Mirror system is based on large data of the wind control model, based on this large data model, magic mirror can be done for each loan to give a corresponding risk rating to reflect the forecast of the overdue rate. Finally, the system based on risk rating to form a risk pricing to ensure that the benefits and risk matching. The risk rating is divided into six grades A to F, and the risk is increased in turn, for example, a-level target delinquency rate less than 0.5%,f level is greater than 8%. From a ...

Query processing of large-scale vector spatial data selection based on Mapredue Tao Daiju Zheng Zezhong Liu Shuai for the efficient processing of large-scale vector space data, based on Hadoop parallel computing Framework mapredue, a distributed vector spatial data selection query processing method is realized. First of all, This paper analyzes the Key/value data model of OGC simple factor Standard and Hadoop, designs the vector file format which can be stored in Hadoop HDFs, secondly, according to the two-stage filtering-refining strategy, the map input data fragment, choose to search ...

Absrtact: Ma Yun firmly believe that the future can not listen to economists, but the Economist to provide the information and judgment must be wrong? Is it the business instinct to know more about destiny, or is the Economist's data model more plausible? A few days ago, the billion Bang Power network special traffic Bank chief economics Jack Ma firmly believe that "the future can not listen to The Economist", but the Economist to provide information and judgments must be wrong? Is it the business instinct to know more about destiny, or is the Economist's data model more plausible? A few days ago, billion power network special traffic bank chief economist Lianping, the future of the electric business situation made the following judgments: Lianping that, with the electrical business ...

Data scientists are described by the media as the sexiest career in the 21st century and as a superstar of the IT industry who are struggling to make big data, but in fact there are no data scientists Under the same enterprise can play big data. Up to now, as long as big data is mentioned, the most talked about is the shortage of talent, data scientists have become the most sexy career in the 21st century and so on. The report from a Harvard business review and consulting firm, also said that with the help of data scientists themselves naturally happy ...

This article describes a more general encapsulation scenario in which dojo is used in combination. Stateful, DOJO.XHR, Dojo. Common classes and methods such as Deferred enable developers to implement synchronous or asynchronous interactions between client and REST-style APIs in an object-oriented, simple and transparent manner. This article will use Dojo 1.7 and follow AMD's specifications to design and implement WEB front-end Http://www.aliyu that interact with the REST API ...

Implementation of a SaaS-mode air defense combat simulation and editing system Yai Qingfeng Feng Shaochong di Yan Qiang Zhu Yuanchang in view of the current simulation of the editing system in terms of versatility, flexibility and update upgrades and other problems, The design of a SaaS (Software-as-a-service) model of the Air Defense combat simulation of the editing system. By establishing a unified data model (data class set) for the air defense weapon to realize the independence of processing, we can realize the relative independence of the business logic by designing the business logic module which is independent of the specific weapon. Use M ...

Decentralized structured storage System--cassandra Li Yu Cassandra is a distributed storage system that can be used to manage huge amounts of structured data distributed across a large number of inexpensive server systems, while providing high availability services with no single point of failure. Cassandra is designed to run on an infrastructure consisting of hundreds of nodes, which may be distributed across a number of different data centers, and when the nodes reach this size, a large and small component failure can occur frequently. Cassandra face these failures when managing persistent state ...

In a previous article in this series, and you mentioned that the world has a lot of nosql products, then why the author on the basis of these products, research and development of new NoSQL database? Because in the development of Yunengine, the author found in the industry also lacks a very concise architecture, and can adapt to a variety of cloud computing scene of the NoSQL database, so at that time I began to carry out yuntable development work. Yuntable's goal is not to be a database like bigtable all-inclusive, but to be a master ...