Questions tagged as 'nosql'

Tagged questions
1
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Apply filters to NoSQL query in MongoDB

I am working on a project that uses a NoSQL database and would like to know how to make a query to filter through the source field of the following data set: { "_id" : ObjectId("55f9ba45647ba23c39207e9d"), "ident" : "66198708-5c...
asked by 10.12.2015 / 21:11
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Auto-Reference in MongoDB

I have a collection which has a parent field that refers to documents from the same collection, now what I do is call them and find the id of the parent and create a children field where all the subdocuments go, this I do in the controlle...
asked by 21.12.2015 / 16:19
2
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Using $ unwind on object properties

Is it possible to use $unwind on the properties of an object when making a query with agregation in MongoDB v3? I need to extract the controls that meet certain conditions in each object of the array of objects in each area code...
asked by 16.12.2015 / 13:14
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Migrate CSV file to HBASE

I am learning how to use hadoop and hbase and I am presented with this problem that has something tangled in all these technologies. I have about 24 hadoop fedora and it was working. and I have some databases in CSV file. I want to upload the...
asked by 19.08.2016 / 11:11
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PHP with Mongo, questions with questions

I have a code very similar to the one in the photo, in the part that says '$gte' => 18 I just want to replace 18 with a variable that the user enters. I already have the variable and tried with '$gte' => $num but it does not...
asked by 12.07.2016 / 20:56
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Create an IndexedDB editor to store values in a NoSQL database in JavaScript [closed]

I have done a BBCode editor in JavaScript but I need that those values entered (in principle only a value that is the name of a fruit) are stored in a NoSQL database with using IndexedDB and LocalStorage, the problem is that I am quite lost in t...
asked by 15.03.2017 / 20:57
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I need help with a Query on a Backend- RestAPI of mongoDB using mongoose

This is the model of the object to which I ask the question const mongoose = require('mongoose'); const userSchema = mongoose.Schema({ _id: mongoose.Schema.Types.ObjectId, email: { type: String, required: true}, nombre: { type: String, requi...
asked by 24.06.2018 / 02:00
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Save image download address in Firebase Storage in Firebase DataBase

I build an app where in an activity you can choose a photo upload it and then upload your other information such as age name etc. My code starts asking you to select a photo of where you want and then you cut it then upload to the Firebase Stora...
asked by 16.10.2018 / 22:33
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Big Data project start council [closed]

Good evening, I have been assigned a project and I do not really know where to start. By curl I receive a json, the client wants to save every second the received data. Right now they have a cron task that calls a php file that performs an...
asked by 30.03.2017 / 21:30
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is it possible to create a document database in MySQL?

Inside MySQL 5.7 onwards until version 8; we are already able to use attributes for data of type JSON Like this: CREATE TABLE profile( id BIGINT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(50) UNIQUE NOT NULL, attributes JSON NOT...
asked by 23.09.2018 / 22:12