Search results
Results from the WOW.Com Content Network
SQLAlchemy is an open-source Python library that provides an SQL toolkit (called "SQLAlchemy Core") and an Object Relational Mapper (ORM) for database interactions. It allows developers to work with databases using Python objects, enabling efficient and flexible database access.
For example, consider an address book entry that represents a single person along with zero or more phone numbers and zero or more addresses. This could be modeled in an object-oriented implementation by a "Person object " with an attribute/field to hold each data item that the entry comprises: the person's name, a list of phone numbers, and a ...
In software, a data access object (DAO) is a pattern that provides an abstract interface to some type of database or other persistence mechanism.By mapping application calls to the persistence layer, the DAO provides data operations without exposing database details.
Object–role modeling (ORM) is used to model the semantics of a universe of discourse. ORM is often used for data modeling and software engineering . An object–role model uses graphical symbols that are based on first order predicate logic and set theory to enable the modeler to create an unambiguous definition of an arbitrary universe of ...
An example for an application that may make use of AMI is a web browser that needs to display a web page even before all images are loaded. Since method is a special case of procedure , asynchronous method invocation is a special case of asynchronous procedure call .
First, the async keyword indicates to C# that the method is asynchronous, meaning that it may use an arbitrary number of await expressions and will bind the result to a promise. [1]: 165–168 The return type, Task<T>, is C#'s analogue to the concept of a promise, and here is indicated to have a result value of type int.
The standard has the book number ISBN 1-85912-081-4 and the internal document number is C451. ISO SQL/CLI is an addendum to 1992 SQL standard . It was completed as ISO standard ISO/IEC 9075-3:1995 Information technology—Database languages—SQL—Part 3: Call-Level Interface (SQL/CLI). The current SQL/CLI effort is adding support for SQL3.
Web browsers and web servers are examples of processes that communicate by message-passing. A URL is an example of referencing a resource without exposing process internals. A subroutine call or method invocation will not exit until the invoked computation has terminated. Asynchronous message-passing, by contrast, can result in a response ...