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Data definition language. In the context of SQL, data definition or data description language ( DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. DDL statements are similar to a computer programming language for defining data structures, especially database schemas.
DELETE. In HTTP, the GET (read), PUT (create and update), POST (create - if we don't have `id` or `uuid`), and DELETE (delete) methods are CRUD operations as they have storage management semantics, meaning that they let user agents directly manipulate the states of target resources. [3] The POST method, on the other hand, is a process operation ...
Database index. A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.
Oracle Database (commonly referred to as Oracle DBMS, Oracle Autonomous Database, or simply as Oracle) is a proprietary multi-model [4] database management system produced and marketed by Oracle Corporation . It is a database commonly used for running online transaction processing (OLTP), data warehousing (DW) and mixed (OLTP & DW) database ...
Database trigger. A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database. For example, when a new record (representing a new worker) is added to the employees table ...
Steepest drop angle on a steel roller coaster; Rank Name Park Country Drop angle Manufacturer Record held 1 TMNT Shellraiser: Nickelodeon Universe United States: 121.5° Gerstlauer: October 2019 – present 2 Takabisha: Fuji-Q Highland Japan: 121.0° Gerstlauer: 15 July 2011 – October 2019 3 Green Lantern Coaster: Warner Bros. Movie World ...
Synonym (database) In databases, a synonym is an alias or alternate name for a table, view, sequence, or other schema object. They are used mainly to make it easy for users to access database objects owned by other users. They hide the underlying object's identity and make it harder for a malicious program or user to target the underlying object.
2.1 Analyzing “Big Data” to predict Student Dropouts. The study we conducted involves the mining and analysis of “big data”, which in our case refers to large existing datasets that can be analyzed to discern patterns in student and teacher performance, identify at-risk students, and study relationships among important variables, such ...