use MongoDb and there is 2 Models :-
\na. Product b. Category
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\n","urlObject":{"port":"7000","path":["create",""],"host":["localhost"],"query":[],"variable":[]}},"response":[{"id":"51c4f3a5-2b87-4759-88f4-c2501b08696b","name":"Create Product","originalRequest":{"method":"POST","header":[],"body":{"mode":"raw","raw":"{\r\n\r\n \"categoryName\":\"Drink\",\r\n \"productName\": \"Pine Apple Juice\",\r\n \"qtyPerUnit\": \"piece\",\r\n \"unitPrice\": \"70\",\r\n \"unitInStock\": \"20\",\r\n \"discontinued\": \"0\"\r\n}","options":{"raw":{"language":"json"}}},"url":"localhost:7000/create/"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"X-Powered-By","value":"Express"},{"key":"Content-Type","value":"application/json; charset=utf-8"},{"key":"Content-Length","value":"278"},{"key":"ETag","value":"W/\"116-zl16+xYNQniwqC5Hk6UdBTdDiyI\""},{"key":"Date","value":"Thu, 16 Feb 2023 05:14:39 GMT"},{"key":"Connection","value":"keep-alive"},{"key":"Keep-Alive","value":"timeout=5"}],"cookie":[],"responseTime":null,"body":"{\n \"product\": {\n \"productName\": \"Pine Apple Juice\",\n \"qtyPerUnit\": \"piece\",\n \"unitPrice\": 70,\n \"unitInStock\": 20,\n \"discontinued\": false,\n \"categoryId\": \"63edbbbf102a617a7446e363\",\n \"_id\": \"63edbbbf102a617a7446e365\",\n \"__v\": 0\n },\n \"category\": {\n \"categoryName\": \"drink\",\n \"_id\": \"63edbbbf102a617a7446e363\",\n \"__v\": 0\n }\n}"}],"_postman_id":"20f026ae-0313-4de8-93cc-4205349d3720"},{"name":"Read All Data","id":"a60b6e04-af32-492c-941a-ece7ecd6b931","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[],"body":{"mode":"raw","raw":"{\r\n\r\n \"categoryName\":\"Fruit\",\r\n \"productName\": \"Apple\",\r\n \"qtyPerUnit\": \"Kg\",\r\n \"unitPrice\": \"70\",\r\n \"unitInStock\": \"20\",\r\n \"discontinued\": \"1\"\r\n}","options":{"raw":{"language":"json"}}},"url":"localhost:7000/readAll","description":"To retrieve data for all products and obtain their corresponding JSON data.
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\n","urlObject":{"port":"7000","path":["read","63ed3608a7eac2395590af78"],"host":["localhost"],"query":[],"variable":[]}},"response":[{"id":"16ead809-8215-42d4-9ddf-2b8866c5b5a3","name":"Read only product-id","originalRequest":{"method":"GET","header":[],"body":{"mode":"raw","raw":"{\r\n\r\n \"categoryName\":\"Fruit\",\r\n \"productName\": \"Apple\",\r\n \"qtyPerUnit\": \"Kg\",\r\n \"unitPrice\": \"70\",\r\n \"unitInStock\": \"20\",\r\n \"discontinued\": \"1\"\r\n}","options":{"raw":{"language":"json"}}},"url":"localhost:7000/read/63ed3608a7eac2395590af78"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"X-Powered-By","value":"Express"},{"key":"Content-Type","value":"application/json; charset=utf-8"},{"key":"Content-Length","value":"216"},{"key":"ETag","value":"W/\"d8-jyr3xEDnnPkf6XiUoQ4A5Hk4pM4\""},{"key":"Date","value":"Thu, 16 Feb 2023 05:16:24 GMT"},{"key":"Connection","value":"keep-alive"},{"key":"Keep-Alive","value":"timeout=5"}],"cookie":[],"responseTime":null,"body":"{\n \"_id\": \"63ed3608a7eac2395590af78\",\n \"productName\": \"Grapes\",\n \"qtyPerUnit\": \"Kg\",\n \"unitPrice\": 110,\n \"unitInStock\": 40,\n \"discontinued\": false,\n \"categoryId\": {\n \"_id\": \"63ed3608a7eac2395590af76\",\n \"categoryName\": \"fruit\",\n \"__v\": 0\n },\n \"__v\": 0\n}"}],"_postman_id":"c02c4144-5f01-41fe-b584-b467a4067497"},{"name":"Update by product_id","id":"b50bb53c-8850-4bd8-b428-de241c2373f4","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"PUT","header":[],"body":{"mode":"raw","raw":"{\r\n \"categoryName\":\"Fruits\",\r\n \"productName\": \"Mango\",\r\n \"qtyPerUnit\": \"Kg\",\r\n \"unitPrice\": \"80\",\r\n \"unitInStock\": \"20\",\r\n \"discontinued\": \"0\"\r\n}","options":{"raw":{"language":"json"}}},"url":"localhost:7000/update/63ed3608a7eac2395590af78","description":"To properly update a product, please use its corresponding product ID. Once the updation process is complete, a message will be displayed confirming the successful updation of the product.
\n","urlObject":{"port":"7000","path":["update","63ed3608a7eac2395590af78"],"host":["localhost"],"query":[],"variable":[]}},"response":[{"id":"0aea33ae-f940-4d71-9fac-a75a6bbc2766","name":"Update by product_id","originalRequest":{"method":"PUT","header":[],"body":{"mode":"raw","raw":"{\r\n \"categoryName\":\"Fruits\",\r\n \"productName\": \"Mango\",\r\n \"qtyPerUnit\": \"Kg\",\r\n \"unitPrice\": \"80\",\r\n \"unitInStock\": \"20\",\r\n \"discontinued\": \"0\"\r\n}","options":{"raw":{"language":"json"}}},"url":"localhost:7000/update/63ed3608a7eac2395590af78"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"X-Powered-By","value":"Express"},{"key":"Content-Type","value":"application/json; charset=utf-8"},{"key":"Content-Length","value":"42"},{"key":"ETag","value":"W/\"2a-xkx5KN1R/KioLOUe4KCUrVOtulk\""},{"key":"Date","value":"Thu, 16 Feb 2023 05:17:40 GMT"},{"key":"Connection","value":"keep-alive"},{"key":"Keep-Alive","value":"timeout=5"}],"cookie":[],"responseTime":null,"body":"{\n \"message\": \"Product updated successfully\"\n}"}],"_postman_id":"b50bb53c-8850-4bd8-b428-de241c2373f4"},{"name":"Delete product by id","id":"dbfad68a-42ab-4eaf-9061-68da95b3221d","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"DELETE","header":[],"url":"localhost:7000/delete/63edbccd102a617a7446e373","description":"To properly delete a product, please use its corresponding product ID. Once the deletion process is complete, a message will be displayed confirming the successful deletion of the product.
\n","urlObject":{"port":"7000","path":["delete","63edbccd102a617a7446e373"],"host":["localhost"],"query":[],"variable":[]}},"response":[{"id":"8d5f1073-82ac-429f-9b1b-60066816ea7a","name":"Delete product by id","originalRequest":{"method":"DELETE","header":[],"url":"localhost:7000/delete/63edbccd102a617a7446e373"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"X-Powered-By","value":"Express"},{"key":"Content-Type","value":"application/json; charset=utf-8"},{"key":"Content-Length","value":"42"},{"key":"ETag","value":"W/\"2a-a+2htZNpkCDaj0ausIFBiheaYZ4\""},{"key":"Date","value":"Thu, 16 Feb 2023 05:19:38 GMT"},{"key":"Connection","value":"keep-alive"},{"key":"Keep-Alive","value":"timeout=5"}],"cookie":[],"responseTime":null,"body":"{\n \"message\": \"Product deleted successfully\"\n}"}],"_postman_id":"dbfad68a-42ab-4eaf-9061-68da95b3221d"}]}