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Row level triggers would execute once for each row that is affected by the UPDATE. It is important to keep in mind if no rows are affected by the UPDATE command, the trigger will not execute any code within the trigger. Statement level triggers will be called once regardless of how many rows are affected by the UPDATE. Here it is important to ...
There are two variants of the Log trigger, depending how the old values (DELETE, UPDATE) and new values (INSERT, UPDATE) are exposed to the trigger (it is RDBMS dependent): Old and new values as fields of a record data structure
You can undo the operation of removing records by using the ROLLBACK command; DELETE requires a shared table lock; Triggers fire; DELETE can be used in the case of: database link; DELETE returns the number of records deleted; Transaction log - DELETE needs to read records, check constraints, update block, update indexes, and generate redo / undo.
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
Similarly, a delete expression calls a delete function, also known as a deallocator function, whose name is operator delete. [ 2 ] [ 3 ] Any new expression that uses the placement syntax is a placement new expression, and any operator new or operator delete function that takes more than the mandatory first parameter ( std :: size_t ) is a ...
Google LLC (/ ˈ ɡ uː ɡ əl / ⓘ, GOO-gəl) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial intelligence (AI). [9]
For example, in the command-line environment, pressing the interrupt character (usually Control-C) might terminate the currently running process. [61] To generate software interrupts for x86 CPUs, the INT assembly language instruction is available. [62] The syntax is INT X, where X is the offset number (in hexadecimal format) to the interrupt ...
It is unclear whether temporary loss of access to data is enough to trigger liability, or whether GDPR applies to all incidents related to security or only unauthorised access. [51] Further, the incident could be classed as a "personal data breach" which would be a data breach of the GDPR under Article 4 named "Definitions", paragraph 12.