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SQLAlchemy is an open-source Python library that provides an SQL toolkit (called "SQLAlchemy Core") and an Object Relational Mapper (ORM) for database interactions. It allows developers to work with databases using Python objects, enabling efficient and flexible database access.
NoSQL (originally referring to "non-SQL" or "non-relational") [1] is an approach to database design that focuses on providing a mechanism for storage and retrieval of data that is modeled in means other than the tabular relations used in relational databases. Instead of the typical tabular structure of a relational database, NoSQL databases ...
Jepsen's test summary reads in part: Jepsen evaluated MongoDB version 4.2.6, and found that even at the strongest levels of read and write concern, it failed to preserve snapshot isolation. Instead, Jepsen observed read skew, cyclic information flow, duplicate writes, and internal consistency violations.
Prior to MongoDB, Ittycheria co-founded BladeLogic in 2001 and worked as the company's chief executive until it was bought by BMC for $900 million in 2008, after which he became president at BMC. In 2012, he joined venture capital firm Greylock Partners as a partner. In his early career, he also co-founded and ran a cloud services company ...