drawing views

There are no obvious conceptual differences between the various views in UML, the views are broadly divided into three categories: structural classification, dynamic behavior, and model Management.The structure classification mainly describes the structure members and their interrelation in the system. A class element includes classes, use cases, artifacts, and nodes. The class element lays the foundation f

Materialized views can be refreshed in three ways: complete, fast, and force: (1) A complete refresh operation deletes all records in the table (if a single table is refreshed, truncate may be used ), then, the materialized view is regenerated based on the definition of the query statement in the materialized view. (2) fast refresh uses the incremental refresh mechanism to only refresh all operations on the base table since the last refresh to the mat

Rapid refresh of materialized views (1) Materialized views can be refreshed in three ways: complete, fast, and force. Complete refresh deletes all records in the table (if a single table is refreshed, truncate may be used), and then generates a materialized view based on the definition of the query statement in the materialized view. Fast refresh uses the incremental refresh mechanism to only refresh all op

1, what is view? 2, why to use the view; 3, the order by in the view; 4, refresh the view; 5, update the view; 6, view options; 7, indexed view; 1. What is a view A view is a virtual table defined by a query that differs from a physical table in that the data in the view has no physical representation unless you create an index for it, and if you query a view without an index, SQL Server actually accesses the underlying table. If you want to create a view, assign it a name and query. SQ

DB2 's DB2 cube views feature makes it easier to integrate business intelligence applications with data warehouses by sharing multidimensional metadata between relational databases and business intelligence applications. Learn how to enable business intelligence applications or tools to take advantage of this powerful new feature. This article applies to the object This article is intended for technical managers and technicians who want to develop o

Detailed description of how to create and render views in the PHP Yii Framework. The Yii Framework view is part of the MVC mode. It is the code that shows data to end users. in web applications, the methods for creating views and rendering views are described in the Yii Framework of PHP. the yii Framework View is part of the MVC pattern. It is the code used to d

? Previous Article (nested states nested views)Next article (URL Routing )? You can name your views so that you can have more than oneUI-ViewPer template. Let's say you had an application state that needed to dynamically populate a graph, some table data and filters for the table like this: When setting multiple views you need to useViewsProperty on state

1. View(1). What is a view?A view is a database object that provides users with a way to retrieve data from a data table. The user browses some or all of the data that is of interest to the data table through the view, and the physical storage location of the data is still in the table.A view is a virtual table and does not represent any physical data, just a window that is used to view data. Views are not stored in a database as a set of data, only t

Tags: blog http io os using AR for Data 2014Materialized view of Http://www.cnblogs.com/Ronger/archive/2012/03/28/2420962.htmlOracleIn the near future, according to the project business needs to the Oracle materialized view has the contact, searches on the net on this aspect information, facilitates enhances, the collation content as follows:Materialized views are a special physical table, and the materialized view is relative to the normal view. The

Materialized views are a special physical table, and the materialized view is relative to the normal view. The normal view is a virtual table, the limitations of the application are large, any query on the view, Oracle is actually converted into a query of the views SQL statement. This has no substantial benefit in improving overall query performance.1. Types of materialized

Materialized views are a special physical table, and the materialized view is relative to the normal view. The normal view is a virtual table, the limitations of the application are large, any query on the view, Oracle is actually converted into a query of the views SQL statement. This improves overall query performance and is not substantially better.Materialized view: A database pair that includes a query

1. Overview of the ViewA view is actually a query SQL statement that displays related data in one or more tables or other views. The view uses the results of a query as a table, so the view can be thought of as a stored query or a virtual table. Views originate from tables, and all changes to view data are eventually reflected in the base table of the view, which must obey the integrity constraints of the b

Common view Django ' s generic views ... were developed as a shortcut for common usage patterns ... They take some common idioms and patterns that are created and abstracted in view development so that you can quickly write a common view of your data without having to repeat it. -Django Documentation One of the main advantages of CBV is that the they allow you to compose bits of reusable behavior. REST Framework takes advantage of pr

This article describes how to create and render views in the PHP Yii Framework, including the explanation of CWidget small objects and how to render another view in the view, if you need it, refer to the following view as part of the MVC mode. It is the code used to display data to end users. in web applications, a view is created based on The View template. The View template is a PHP script file, which mainly contains HTML code and display PHP code,

1. Overview of Views A view is actually a query SQL statement that displays related data in one or more tables or other views. The view uses the results of a query as a table, so the view can be viewed as a stored query or a virtual table. Views are derived from tables, and all modifications to the view data are ultimately reflected in the base table of the vie

I. Indexed views For years, MicrosoftSQL Server has supported the creation of virtual tables called views. Typically, the main functions of these views are: Provides a security mechanism that restricts users to a dataset in one or more base tables. Provides a mechanism that allows developers to customize how users can view data stored in a base table in a logi

Oracle Normal view and solid view comparisonSource: Rank Blog | 2013-07-30 Oracle Normal and solid views compared to normal views, the entity view differs in that the manifested view manages the stored data, occupying the physical space of the database. The results of the manifested view are saved in a normal data table, and when queries are made to the entity view, the base table of the entity view is no

Oracle tables and View tables and views the most basic data objects in Oracle databases are tables and views. Other data objects include constraints, sequences, functions, stored procedures, packages, and triggers. Database Operations can basically be attributed to operations on Data Objects. Understanding and understanding Oracle database objects is a shortcut to learning Oracle. Tables and

This article is about switching Views, which is also the third method mentioned in the previous article to change the layout after the iphone rotates, first, let's review the three methods mentioned in the previous article. 1. Use Autosizing 2, write code 3, and get a new View to replace the original View. Switching a View, as its name implies, is to switch between two different views. Therefore, we need at

This article describes how to create and render views in the PHP Yii Framework, including the explanation of CWidget small objects and how to render another view in the view, if you need it, refer to the following view as part of the MVC mode. It is the code used to display data to end users. in web applications, a view is created based on The View template. The View template is a PHP script file, which mainly contains HTML code and display PHP code,