data modeling udemy

Datauml Design is a perpetual free software for developers, improving the efficiency of software development and the specification of code. It mainly includes three functions, data model, code generation and UML modeling, the data model function is similar to PowerDesigner software, code generation is similar to soft code generator. 1. What is DATAUML DesignDATAU

example, each system has customer data. When establishing a data warehouse application for a bank, the data in the above production system should be converted to the data warehouse. From the perspective of the entire bank, its data model is no longer oriented to individual

Parse the Data Modeling Method in AngularJS framework, angularjs framework As we know, AngularJS does not come with other available data modeling solutions. In a rather abstract way, we can use JSON data as the model in the controller. However, as time passes and projects gr

Three-dimensional CAD modeling--half Euler operation model based on the basic data structure (Elar, B_rep)(Euler operations three-dimensional CAD modeling course three-dimensional CAD mold Gao Jingming teacher rendering frame brep with hole with handle b_rep brep elar sweep into operation)This year, I chose teacher Gao's three-dimensional CAD

7.1 The optimization of data mining model should follow the principle of effective and moderate Effective principle: The conclusion of the model or whether the application effect satisfies the original business requirement Moderate principle: input/output cost performance 7.2 How to optimize the model effectively7.2.1 Optimizing model from business thinking is the most important model optimization measure There is no more obvious and i

Data modeling of Enterprise Architect 8 (CREATE TABLE) ---------- 1. We create a view of the database modeling 1.1 The New Diagram window, select Extended on the left select from and select data types in the right diagram modeling. 1.2 Open the Diagram window, you can choose

Recently, I saw an article in my blog "converting the Document Forwarding process custom data modeling. I am going to raise this topic for discussion and discussion, with the main purpose of improving. My general requirements are as follows: Developing a complex enterprise multi-user management information system (MIS) does not involve the development of functions such as

First, the bus architecturein the Data Warehouse of dimension modeling, there is a concept called Bus Architecture, the Chinese is generally translated as "Fieldbus architecture". The bus architecture is one of three key concepts in the Multidimensional architecture (MD) of Kimball, and theother two are the consistency dimension (conformed Dimension) and the consistency fact ( Conformed Fact). in a multidi

Qlikview Data Modeling --- Concatenation, qlikviewThis Blog introduces how to avoid loops and synthetic keys through Concatenation (Concatenation) fact tables:The Modeling in Qlikview is usually very simple. Generally, we only need to rename the names of some sub-segments to prevent or establish automatic association between tables.But sometimes we can't solve th

This Blog introduces how to avoid loops and synthetic keys through Concatenation (Concatenation) fact tables:The modeling in Qlikview is usually very simple. Generally, we only need to rename the names of some sub-segments to prevent or establish automatic association between tables.But sometimes we can't solve the problem by simply renaming it. For example, we have multiple fact tables and multiple associations with other tables, which usually pr

Overview The data model profile is a UML extension of Enterprise impact ect to support relational database modeling. It includes some custom extensions, such as tables, database charts, table keys, triggers and constraints. It is a technology used to model relational databases in UML. Data Modeling not only support

Tags: des c a file data usageToday, we are prepared to further refine the functionality and make it more automated, based on the gadget model_sql written @zhangkai05. Convenient for modeling personnel to develop ETL tasks.After the source code changes, it is published to Git (URL address) and is gradually perfected.Describe the status quo and problemsTeam Data Wa

A brief introduction of data modeling Data modeling can not only model object properties (such as E-R diagram), but also model the behavior of the data (such as trigger trigger, stored procedure stored Procedure). When designing a database, you design the following concepts

Data modeling of Enterprise Architect 8 (Introduction) ---------- We can use UML Data modeling configuration in Enterprise Architect to make database modeling and database design. This configuration provides an extension of the UML standard that is easy to use and easy to un

"Stove-refining AI" machine learning 045-Modeling of stock data by hidden Markov model(Python libraries and version numbers used in this article: Python 3.6, Numpy 1.14, Scikit-learn 0.19, matplotlib 2.2)Stock data is very very typical timing data, the data are arranged by d

relationship), a customer corresponds to multiple orders, an order corresponds to a customer, and a customer can (May is) no orders and he corresponds, an order must (must be) will have the customer and it corresponds.Second, the representation of the symbol in ER diagram1) #: Unique, may later be indicated as the primary key2) *: Non-empty3) O: Optional4) Dashed line: Can be customer this side dashed line, customer may have no order5) Solid line: Must be order this side solid line, the order m

article information, first in the Post collection to find out the article, and then in the user collection to find out all the users information. But if there is such a scene: Users can comment on pictures, articles and other resources, all the comments are placed in the comment collection, if you just use manual References, it is not clear what kind of resources the comment is, picture? Article?. So with the dbref.form of Dbref:{$ref: $ref: Collection name; $id: Reference ID; $db: database nam

data in spark. The data in the Primitivevector is taken out and transformed into a edgepartition, that is, Edgerdd partition implementation. In this process, a column-oriented structure is generated: The Array,edge attribute array for the array,dst point of the SRC point, and two forward and backward maps (local ID and global ID for the corresponding point). Do a count on Edgerdd to trigger this si

Arcgis10 is very powerful, and data modeling is even more powerful, The arcgis10 section is very deserted. For the sake of active sections, a post is posted every day for data modeling. I hope someone can support it. If it doesn't reflect it, or if it's plain, I don't want to post any more. I hope you can reply to it

Geographic Information System (GIS) can process high-resolution and massive spatial data and is a powerful tool for spatial epidemiological research. In order to enable Chinese researchers to master the basic operations and applications of GIS, the education center of the Institute of Computing Technology of the Chinese Emy of Sciences held a "advanced training course on GIS data processing and