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The question is asking about using joins and group by in data analysis.
Joins are used to combine data from multiple tables based on a common column.
Group by is used to group rows based on a specific column and perform aggregate functions on the grouped data.
Joins and group by are commonly used together to analyze data from multiple tables.
Examples of joins include inner join, left join, and right join.
Examples of aggre...
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MongoDB database algorithms are used for efficient data storage, retrieval, and processing.
MongoDB uses various algorithms for indexing, sharding, and aggregation.
Indexing algorithms include B-tree, hash, and text search indexes.
Sharding algorithms include range-based, hash-based, and zone-based sharding.
Aggregation algorithms include map-reduce and aggregation pipeline.
MongoDB also uses algorithms for query optimizati
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Structured Query Language (SQL) is a programming language used to manage and manipulate relational databases.
SQL is used to create, modify, and delete databases, tables, and data
It is used to retrieve data from databases using queries
SQL is used to perform operations on data such as sorting, filtering, and grouping
Examples of SQL-based database management systems include MySQL, Oracle, and Microsoft SQL Server
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