PreviousArticleBased on agileeas. NET platform basic library for application development-the general description and Data Definition of the data tables and part of the data involved in this case, this article will start from the most basic business, data access-SQL statement operation starts.
In agileeas. in the. NET platform, data access is encapsulated and called UDA (Unified Data Access. for more information about the. NET platform
Review above
PreviousArticleBased on agileeas. NET platform basic library for application development-the article "using UDA to manipulate SQL statements" demonstrates how to use UDA for regular business operations. We can see two data manipulation procedures, one is the original operation process, and the other is the simplified data operation process. application developers do not have to worry about op
v5.01nsignsoft.intellibo.v3.6.2 (Professional logistics software)simprocess.v4.2.1 1CD (a workflow simulation tool)Sciforma process v4.1.2 (product production process management software)teamflow.v9.0 (one software for project preparation and process preparation)Bentley Microstation Connect Edition v10.00.025 Win64 1DVD General Purpose Environment support integrated project deliveryConnect Edition opens up new Horizons to support integrated project delivery by integrating design modeling, analy
Functions: Python vs C + +In Python and C + +, functions work the same way, and functions combine statements to perform certain tasks. Functions can help you avoid duplicating and pasting the same code repeatedly.The syntax for writing a function is
Lexicon, as its name implies, is a 'dictionary '. Therefore, many user-defined work can be performed in this module. This module is not only an important module but also a very commonly used module. However, to use this module smoothly, the following two conditions are indispensable:
A) log on to the module as a free user. Normal general users cannot access this module.
B) There must be a DB of dict type to store custom data, and the DB must be in the selected MDB.
1. Custom type
The Lexicon mod
-video tutorial series-Index
"Step by Step teach you how to use the agileeas. NET platform for Applications" series of articles
Step by step teach you how to use the agileeas. net base class library for application development-series directory
Step by step teach you how to use the agileeas. net base class library for application development-basics-use UDA to manipulate SQL statements
Step by step teach you how to use the agileeas. net base cla
It uses a general database metadata class UnDbAccess, which mainly implements the following methods:
1. ExecuteNonQuery: Execute SQL statements such as INSERT, DELETE, and UPDATE and return the number of affected rows.
2. ExecuteReader: Execute the SELECT Operation and return a data reader object.
3. ExecuteScalar: Execute the SQL operation and return the single-value object, that is, the first data in the first row of the result set.
4. PopulateDataSet: Execute an SQL operation to populate the
The previous four articles demonstrate some conventional operations and configurations of the ORM. Through the previous articles, application developers should be able to use the ORM to develop simple applications. However, the ORM is not the omnipotent key, in business applications, many problems cannot be solved by ORM. For these problems, we must use SQL statements.
Focus of this Article
Since ORM cannot solve all the problems, we have to use SQL statements, that is, we can understand that in
programming models, and new features, and survives, while maintaining its true mission. ODBC continues to provide (or more or less) the functionality of an open database connection with the name and functionality of OLE DB.
OLE DB, as a programming interface, applies the theoretical concepts of Microsoft Universal Data Access (UDA) policies to practice. UDA is able to access various types of data, includin
models, and new features, and survives, while maintaining its true mission. ODBC continues to provide (or more or less) the functionality of an open database connection with the name and functionality of OLE DB.
OLE DB, as a programming interface, applies the theoretical concepts of Microsoft Universal Data Access (UDA) policies to practice. UDA is able to access various types of data, including relationa
ego_item_pub. Process_item_cat_assignment API? [Video]
note 729246.1
how to Create Or Update Role Grants on Item Using ego_item_pub. Process_item_role API? [Video]
note 1340478.1
api for BOM Structure User Defined Attributes (UDA)? [Video]
note 1340855.1
api for BOM Component User Defined Attributes (UDA)? [Video]
note 1366502.1
UPnP protocol learning notes-Overview [What is UPnP technology ?] The UPnP (Universal Plug and Play) technology is an architecture designed to connect Smart appliances, wireless devices, and various types of personal computers over P2P networks. It is designed to be an easy-to-use, flexible, and standard-based connection to families, small businesses, and public places connected to ad-hoc or unmanaged networks. UPnP is a Distributed Open Network Architecture Based on TCP/IP and network technolog
queries go to the DMR query planner.Each query planner generates the appropriate query language and sends the request to its respective query execution layer. For OLAP, the query planner generates an MDX (multidimensionalexpressions) query and sends it to the multidimensional data Service (MDDS), and for a relational query, it generates SQL and sends it to the universal Data Access (UDA) module. For DMR, a cube build request is processed first, which
write another blog post to discuss these specific window types.
Sometimes, when you think of a window as just "a collection of events in the memory", you will be asked about how to "access" the window in different ways. Indeed, a window is a collection of events in streaminsight's controllable memory and can be accessed programmatically: User-defined aggregate operations (Udas) or user-defined operators (udos ). These extended interfaces allow you to write C # code to operate events in the wind
many problems, such as the data update is not timely, spatial resource redundancy and access efficiency is low, etc.
At this time, Microsoft's Universal Data Access Technology (UDA) came into being, enabling data applications to access a wide variety of data through data providers that implement the standard OLE DB interface, regardless of where the data resides, or whether data transfer or replication or transformation is required.
OLE DB, as a da
different numbers in a unified mannerThe universaldataaccess (UDA) architecture was proposed in 1997. UDA, with COM technology as its core, assists programmers in accessing various data sources in the enterprise. UDA is a skeleton of technology with OLE-DB (software that belongs to the operating system level). OLE-DB defines a unified COM interface as a standard
the ODBC Manager. The manager registers a data source based on the database location, database type, ODBC driver, and other information provided by the data source, establish a connection between ODBC and a specific database. In this way, as long as the application provides the data source name to ODBC, ODBC can establish a connection with the corresponding database.
Ii. OLE DB
The origin of OLE-DB
As data sources become increasingly complex, today's applications may need to obtain and proce
[What is UPnP technology ?]
The UPnP (Universal Plug and Play) technology is an architecture designed to connect Smart appliances, wireless devices, and various types of personal computers over P2P networks. It is designed to be an easy-to-use, flexible, and standard-based connection to families, small businesses, and public places connected to ad-hoc or unmanaged networks. UPnP is a Distributed Open Network Architecture Based on TCP/IP and network technologies. It not only provides control and
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