CosmosDB

SQLServerCentral Article

Quick and Effective Migration Between CosmosDB Collections Using ADF

  • Article

This document aims to explain the process of using ADF (Azure data Factory) to make a copy of a Cosmos DB (Instance A)  collection into a new collection in another Cosmos DB Instance effectively and cost effectively. For example, here is our  Instance A in the Data Explorer: Here is Instance B: We are looking […]

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2024-03-25

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SQLServerCentral Article

Azure Cosmos DB – HTAP using Azure Synapse Link

  • Article

In this article, we will explore the HTAP capabilities of Cosmos DB. The goal is to derive real-time insights from transactional changes made to Cosmos DB, in a cost-effective manner with minimal overhead. I want the solution to be scalable, reliable and overall simple to maintain.

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2021-11-03

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External Article

Introduction to the Cosmos DB Emulator

  • Article

Cosmos DB delivers a wide range of advantages over traditional SQL and NoSQL-based data stores, including support for multiple consistency levels, latency and throughput guarantees, policy-based geo-fencing, automatic scaling, and multi-master replication model. However, it is a significant departure from the traditional database management and development approach that most database administrators are familiar with. Discover the offerings that you can use at no cost to gain hands-on experience with Cosmos DB.

2019-05-21

External Article

Azure Cosmos DB Consistency Levels

  • Article

The majority of traditional database management systems are responsible for making sure that any changes to their data are consistently reflected in the results of subsequent queries. Azure Cosmos DB extends the range of consistency options by providing support for bounded-staleness, session, and consistent prefix models.

2018-02-09

2,650 reads

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Question of the Day

STRING_AGG's behavior

Executing the following script (Sql Server 2022), you get the table t0 with 10 rows:
CREATE TABLE t0
( id     INT PRIMARY KEY
, field1 VARCHAR(1000)
, field2 VARCHAR(MAX));
INSERT INTO t0
SELECT
  gs.value
, REPLICATE ('X', 1000)
, REPLICATE ('Y', 1000)
FROM generate_series(1, 10, 1) gs;
GO
What happens if you execute the following statements?
  1. select STRING_AGG(field1, ';') within group (order by id)  from t0;
  2. select STRING_AGG(field2, ';') within group (order by id)  from t0;

See possible answers