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Initial (chaotic, ad hoc, individual heroics) - the starting point for use of a new or undocumented repeat process. Repeatable - the process is at least documented sufficiently such that repeating the same steps may be attempted. Defined - the process is defined/confirmed as a standard business process
CMMI defines the following five maturity levels (1 to 5) for processes: Initial, Managed, Defined, Quantitatively Managed, and Optimizing. CMMI Version 3.0 was published in 2023; [1] Version 2.0 was published in 2018; Version 1.3 was published in 2010, and is the reference model for the rest of the information in this article. CMMI is ...
A process-data diagram consists of two integrated models. The meta-process model on the left-hand side is based on a UML activity diagram, and the meta-data model on the right-hand side is an adapted UML class diagram. Combining these two models, the process-data diagram is used to reveal the relations between activities and artifacts (Saeki ...
Dimensional models are more denormalized and optimized for data querying, while normalized models seek to eliminate data redundancies and are optimized for transaction loading and updating. The predictable framework of a dimensional model allows the database to make strong assumptions about the data which may have a positive impact on performance.
In databases and transaction processing, two-phase locking (2PL) is a pessimistic concurrency control method that guarantees conflict-serializability. [1] [2] It is also the name of the resulting set of database transaction schedules (histories).
The IBM Information Management System (IMS) is a joint hierarchical database and information management system that supports transaction processing. [1] Development began in 1966 to keep track of the bill of materials for the Saturn V rocket of the Apollo program, and the first version on the IBM System/360 Model 65 was completed in 1967 as ICS/DL/I and officially installed in August 1968.
The GT.M database engine uses OCC for managing transactions [8] (even single updates are treated as mini-transactions). Microsoft's Entity Framework (including Code-First) has built-in support for OCC based on a binary timestamp value. [9] Most revision control systems support the "merge" model for concurrency, which is OCC. [citation needed]
Amazon DynamoDB does not natively support join operations, as it is a NoSQL database optimized for single-table, high-performance access patterns. However, join-like operations can be achieved through integrations with external tools such as Amazon EMR, Amazon Athena, and Apache Spark.