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The definition taken from Wikipedia says: "cURL is a computer software project providing a library and command-line tool for transferring data using various protocols." Since REST is an architecture that uses HTTP, a server that exposes a RESTful API can be consumed with cURL, because HTTP is one of the various protocols.įirst, let's install it one the command line.
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If you haven't heard about cURL, this section gives you a short excursus about what's cURL and how to use it to interact with (REST) APIs.
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Both entities result in a client-server architecture (frontend and backend relationship) whereas the backend would be needed for (A) business logic that shouldn't be exposed as source code to the frontend application - otherwise it would be accessible in the browser - or for (B) establishing connections to third-party data sources (e.g. Part 2: How to setup Express.js in Node.jsĪn Express application is most often used as a backend application in a client-server architecture whereas the client could be written in React.js or another popular frontend solution and the server could be written in Express.Part 1: The minimal Node.js with Babel Setup.To simplify your querying from ORACLE-DB, you may want to call your query like this: const oracle = require('./oracle.js') Ĭonst sql = "select 'test' as c1, 'oracle' as c2 from dual" īuilding up the connection and executing is included in this oracle.This tutorial is part 3 of 3 in this series. Sql = "select 'test' as c1, 'oracle' as c2 from dual" Ĭonnection.execute(sql, ] You have the option to get the query result as an object or array. Use may now use the connExecute-Function for executing a query. Query a connection object without parameters If you don't have any oracle instant client installed on you development machine you may follow the instant client installation guide for your operating system. The connectString "ORACLE_DEV_DB_TNA_NAME" may live in a file in the same directory or where your oracle instant client is installed.
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Now you have to create an ORACLE connection, which you can later query. You can install it like any other module: npm install oracledb This module handles the connection between your Node.js app and Oracle server.
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