REST-API mit C# .NET 7 mit Postgres (2023)

FAQs

Does Postgres have a REST API? ›

PostgreSQL REST API implements all CRUD operations (CREATE, READ, UPDATE, DELETE). PostgreSQL REST API automatically imports the database structure and creates metadata of your database.

Some of the REST APIs are deprecated. They are still fully functioning and supported. However, they are not going to be changed or updated.

var cs = "Host=localhost;Username=postgres;Password=s$cret;Database=testdb"; This is the connection string. It is used by the data provider to establish a connection to the database. We specify the host name, user name, password and a database name.

Run database Migration

Add on the “Add Migration” button and the framework will create the required tables in your database. That's it you will have ASP.NET Core running on PostgreSQL.

A web API lets you interact with a web server through HTTP requests, while a REST API lets you interact with any kind of server over HTTP. REST APIs are web services that use HTTP and provide an interface for clients to interact with the service.

What is difference between REST API and RESTful API? ›

REST API uses web services and is based on request and response, whereas RESTful API works completely based on REST application and infrastructure. REST apps have strong protocols and pre-configured architecture layers as security measures, whereas RESTful apps have multi-layered transport protocols.

To send data to the REST API server using C#/. NET, you must make an HTTP POST request and include the POST data in the request's body. You also need to provide the Content-Type: application/json and Content-Length request headers. Below is an example of a REST API POST request to a ReqBin API endpoint.

Create a Web API Project

Or, from the File menu, select New and then Project. In the Templates pane, select Installed Templates and expand the Visual C# node. Under Visual C#, select Web. In the list of project templates, select ASP.NET Web Application.

REST API Security Best Practices

Always start REST API access with the least privileges. The default API access should be Access Denied. If the user is authenticated, the default access should be Read-Only access to the minimum possible data. More data access can be added for higher roles.

One of the disadvantages of RESTful APIs is that you can lose the ability to maintain state in REST, such as within sessions. It can also be more difficult for newer developers to use. It's important to understand what makes a REST API RESTful, and why these constraints exist before building your API.

Cons of RESTful APIs

RESTful APIs can present some challenges when integrating software, such as latency, reliability, security and coupling issues. Latency can be caused by the multiple HTTP requests and responses needed for complex operations.

Any REST request includes four essential parts: an HTTP method, an endpoint, headers, and a body.

Why is REST API so popular? ›

RESTful APIs are the most commonly used APIs in the world of web services. They use Hypertext Transfer Protocol (HTTP) requests to create, read, update, and delete (CRUD) data. They are popular because of their simplicity, scalability, speed, and ability to handle all data types.

PostgreSQL supports Python, PHP, Perl, Tcl, Net, C, C++, Delphi, Java, JavaScript (Node. js), and more. SQL Server is more limited, offering support for Java, JavaScript (Node. js), C#, C++, PHP, Python, and Ruby.

There are a number of ways in which databases can be represented. This is just one of them and the most popular one. This tutorial introduces the four most common operations performed with SQL, and they are Create, Read, Update and Delete. Collectively these four operations are often referred to as CRUD.

PL/pgSQL Functions

Other than SQL and C, you can write functions in procedural languages. Four such languages are supported by core PostgreSQL – pgSQL, Python, Perl and Tcl. Support for any procedural language itself comes from a C shared library, and operates much like mod_perl or mod_python from the Apache era.

We have data on 111,396 companies that use PostgreSQL. The companies using PostgreSQL are most often found in United States and in the Information Technology and Services industry. PostgreSQL is most often used by companies with 10-50 employees and 1M-10M dollars in revenue.

Postgres itself is a database “server.” There are several ways to connect to Postgres via “clients,” including GUIs, CLIs, and programming languages often via ORMs. In order to run and use Postgres on your own computer, you will need to set up both a Postgres server and a client.

Open a file (File -> New File) and set the file type to SQL (View -> Command Palette -> PostgreSQL: Manage Connection Profiles, and opt to select SQL as your file type, then select SQL from the list). Your file should now have the red barrel SQL icon on the tab. Now create a Connection Profile.

Once you have created a database, you can access it by: Running the PostgreSQL interactive terminal program, called psql, which allows you to interactively enter, edit, and execute SQL commands.

Although APIs perform identical tasks, a Web API provides flexibility to any style of communication. Whereas a REST API can take advantage of using REST, SOAP, and XML-RPC for communication.

Why we use REST API in C#? ›

In simple terms a REST API allows applications to interact with each other and exchange data. For example, let's say you are building a mobile application or a web application. In that application you want to display weather data like temperature, humidity, wind speed etc.

Put simply, there are no differences between REST and RESTful as far as APIs are concerned. REST is the set of constraints. RESTful refers to an API adhering to those constraints. It can be used in web services, applications, and software.

From our experience in developing APIs for major corporations, we have figured that Python Flask and Node JS Express have been the best frameworks and languages to developing a RESTful API for any web-based applications.

A RESTful API is an architectural style for an application program interface (API) that uses HTTP requests to access and use data. That data can be used to GET, PUT, POST and DELETE data types, which refers to the reading, updating, creating and deleting of operations concerning resources.

While SOAP and REST are both leading approaches to transferring data over a network using API calls, JSON is a compact data format that RESTful web services can use. Deciding whether you should create a SOAP vs REST API is an essential question if you are planning to provide a web service.

Integrate Data: Load data from REST API to MySQL by providing your MySQL database credentials, such as your authorized username, password, information about your host IP, and the port number value. You will also need to provide a name for your database and a unique name for this destination.

Task 1 - Creating the API Project

From the File menu, select New Project. Select the Visual C# | Web project type from the project type tree view, then select the ASP.NET MVC 4 Web Application project type. Set the project's Name to ContactManager and the Solution name to Begin, then click OK.

To get JSON from a REST API endpoint using C#/. NET, you must send an HTTP GET request to the REST API server and provide an Accept: application/json request header. The Accept: application/json header tells the REST API server that the API client expects to receive data in JSON format.

There are four different types of APIs commonly used in web services: public, partner, private and composite.

How to call API with API key in C#? ›

REST APIs use HTTP and support Transport Layer Security (TLS) encryption. TLS is a standard that keeps an internet connection private and checks that the data sent between two systems (a server and a server, or a server and a client) is encrypted and unmodified.

Store API keys or signing secrets in files outside of your application's source tree. If you store API keys or any other private information in files, keep the files outside your application's source tree to keep your keys out of your source code control system.

Database REST API. One of the core features of the restdb.io database cloud service is the Restful API which automatically reflects your database schema. All restdb.io databases have a unique URL as a REST endpoint. Client applications communicate through the URL with JSON objects.

Postgres uses a message-based protocol for communication between frontends and backends. The protocol is implemented over TCP/IP and also on Unix sockets.

Does MySQL have a REST API? ›

MySQL has been the standard for this for decades. The one drawback is that databases only store data. If you want to do something with that data, a MySQL REST API makes it possible. Here is what you need to know to use MySQL REST APIs in your projects.

Prisma is the only fully type-safe ORM in the TypeScript ecosystem. The generated Prisma Client ensures typed query results even for partial queries and relations. You can learn more about this in the type-safety comparison with TypeORM.

The primary goal of API is to standardize data exchange between web services. Depending on the type of API, the choice of protocol changes. On the other hand, REST API is an architectural style for building web services that interact via an HTTP protocol.

REST means representational state transfer, and it's an architecture used to design client-server applications. With a Rest API, you're getting a representation of the requested data stored in a database. A REST API is also stateless, which means that the server doesn't store any data between requests from clients.

Robust, reliable open source relational database

PostgreSQL is used as the primary data store or data warehouse for many web, mobile, geospatial, and analytics applications. The latest major version is PostgreSQL 12.

PostgreSQL uses a message-based protocol for communication between frontends and backends (clients and servers). The protocol is supported over TCP/IP and also over Unix-domain sockets.

Postgres can also run standalone as a server, but then you have to manage all that yourself. It does not need a companion server, it acts as a database server in its own right. Postgres has its own SQL language called pgsql. Sql Server has a SQL language called T-sql etc.

The Snowflake SQL API is a REST API that you can use to access and update data in a Snowflake database. You can use this API to develop custom applications and integrations that: Perform queries.

Does REST API use SQL? ›

The REST API allows you to run SQL statements and query directly through REST requests.