Upsert should only occur if the value of a particular field in the document that I'm attempting to upsert (the index) is greater than the one that is currently
I am explaining with a simple example see my MongoDB collection looks like this: [ { pid: erwer, qty: 3, LevelDetails: {
I was going through the article here : https://aws.amazon.com/blogs/opensource/announcing-partiql-one-query-language-for-all-your-data/ It looks like "PartiQL"
I have this document : [ { "_id": "626c5fd2aa0fc0e4eef45c94", "productos": [ { "_id": "626d50b621180e291a330333"
Suppose I have a table with ten billion rows spread across 100 machines. The table has the following structure: PK1 PK2 PK3 V1 V2 Where PK represents a partiti
According to the official documentation, among the restrictions on counter columns in ScyllaDB are: The only other columns in a table with a counter column can
I am trying to set up a DynamoDB database where every item is a product. Each product has a list of 1-5 product IDs (12-digit numeric), for example: { 'name
I am learning about BigTable, and trying to design a good schema for it user there will be an ID(unique), in time this user will receive many events(these event
I've started DynamoDB in Docker: docker run --network xxx --name dynamodb -d -p 8000:8000 amazon/dynamodb-local I've created a table: aws dynamodb create-table
I am working with an Django application which uses Django 1.8 version. Most of the data we deal with is JSON formatted ones. We are trying to implement any No
I have a records collection with the following indexes: {"_id":1} {"car.make":1,"city":1,"car.mileage":1} And performing the following query: db.records.agg
I have to design a system with this schema. { "documentId" : 123 "documentType" : "paper" "tags" :["abc","xyz"] //other meta data of document } The queries
I am running a crm application which uses mysql database. My application generating lots of data in mysql. Now i want to give my customer a reporting section wh
I am looking into deploying a database management system, replicated across regions (various data centers across a country). I am currently looking into the fol
I have been asked this question in several interviews and I am looking for answers in the terms of how do we choose between MySQL database and NoSQL database fo
Aerospike is a (mostly commercial) distributed key value NoSQL database. SeaweedFS is a (open source) distributed file system that is based on Facebook’s
I've Cassandra configured on Amazon EC2 having 3 nodes(instances) in single cluster. Now what I want to do is give some space on Cassandra to my clients by crea
I am attempting to import a CSV using my mongoose modal and regardless of its size, I am importing the first 2 rows and then every other row. const fs = require
I'm using DynamoDB and I need to update a specific attribute on multiple records. Writing my requirement in pseudo-language I would like to do an update that sa
Background Our application uses Jedis-2.2.1 and connects to Redis-2.6, here's how I get jedis resource : protected static JedisWrapper getRedisUserWrite(Stri