https://docs.mongodb.com/getting-started/csharp/query/ Overview You can use the Find and FindAsync methods to issue a query to retrieve data from a collection in MongoDB. All queries in MongoDB have the scope of a single collection. Queries can retur…

https://docs.mongodb.com/getting-started/shell/query/ Overview You can use the find() method to issue a query to retrieve data from a collection in MongoDB. All queries in MongoDB have the scope of a single collection. Queries can return all document…

from : https://powerobjects.com/2020/05/20/use-sql-to-query-data-from-cds-and-dynamics-365-ce/ Have you ever wanted to use T-SQL to query Dynamics 365 Customer Engagement (CE) or CDS data from a cloud-hosted environment, without having to replicate y…

https://docs.mongodb.com/getting-started/csharp/insert/ OverView You can use the InsertOneAsync method and the InsertManyAsync method to add documents to acollection in MongoDB. If you attempt to add documents to a collection that does not exist, Mon…

If your primary objective is to query your data in Hadoop to browse, manipulate, and extract it into R, then you probably want to use SQL. You can write SQL code explicitly to interact with Hadoop, or you can write SQL code implicitly with dplyr. The…

Error ERROR TaskSetManager: Total size of serialized results of 8113 tasks (1131.0 MB) is bigger than spark.driver.maxResultSize (1024.0 MB) ERROR TaskSetManager: Total size of serialized results of 8114 tasks (1131.1 MB) is bigger than spark.driver.…

http://www.kalinskyassociates.com/Wpaper4.html Architecture of Device I/O Drivers Many embedded systems developers will tell you that writing a device driver consists of a lot of "bit-bashing and register-twiddling" to convince some ornery unit…

http://vervedevelopments.com/Blog/query-classification-understanding-user-intent.html What exactly is the function of a  search engine? In simplest terms it acquires, stores and returns  information (from the web). Ok, simple enough. But we're talkin…

http://www.infoq.com/articles/bigdata-analytics-for-security This article first appeared in the IEEE Security & Privacymagazine and is brought to you by InfoQ & IEEE Computer Society. Enterprises routinely collect terabytes of security-relevant da…

This is the 3rd course in big data specification courses. Data model reivew 1, data model 的特点: Structured, operations on it, constrains. 2. different types of data model Retrieving data (week 1/2) Querying data from ralational DB. query data from mon…