Foreign Key
In Data Science, a foreign key is a field or a set of fields in a table that uniquely identifies a record in another table. It is used to establish a link between two tables and enforce referential integrity between them. The foreign key constraint ensures that the values in the foreign key column(s) of the referencing table must match the values in the primary key column(s) of the referenced table. This constraint helps to maintain data consistency and prevent orphaned records in the database. Foreign keys are commonly used in relational databases to create relationships between tables and enable efficient querying and data retrieval.
Your Previous Searches
Random Picks
- Quantum Information: Quantum Information is a field of study that combines quantum mechanics and information theory. It deals with the processing, transmission, and storage of information using quantum systems. Quantum Information is based on the principles of ... Read More >>
- Stream Processing Engines: Stream Processing Engines (SPEs) are software systems that enable the processing of continuous data streams in real-time. They allow for the ingestion, processing, and analysis of data as it is generated, without the need for storing it in ... Read More >>
- Recurrent Neural Networks: Recurrent Neural Networks (RNNs) are a type of neural network that can process sequential data by maintaining a state or memory of previous inputs. Unlike feedforward neural networks, which process inputs in a fixed order, RNNs can handle i ... Read More >>
Top News
Trump nominates Marty Makary, who opposed COVID vaccine mandates, to head FDA...
President-elect Donald Trump has nominated a critic of COVID-19 health measures to lead the Food and Drug Administration....
News Source: CBS News on 2024-11-23
Amazon to invest another $4 billion in Anthropic, OpenAI’s biggest rival...
Amazon on Friday announced it would invest an additional $4 billion in Anthropic, the artificial intelligence startup founded by ex-OpenAI research executives....
News Source: NBC News on 2024-11-22
Amazon to invest an additional $4 billion in AI startup Anthropic...
Amazon is investing an additional $4 billion in the artificial intelligence startup Anthropic as major technology companies rush to fund generative AI...
News Source: ABC News on 2024-11-22
We met during the idyllic summer of 2021. Here’s how we’re staying radically...
'For Black people, hope isn’t just an optimistic outlook—it’s a survival mechanism,' write Aaron Long and Tynesha McHarris....
News Source: Fortune on 2024-11-22
Under U.S. antitrust fire, Alphabet stock drops 6%...
Plus: Gary Gensler exits, OpenAI mulls browser in the latest edition of Fortune's flagship tech newsletter....
News Source: Fortune on 2024-11-22