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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. All of this takes time, hence it takes time much longer than with TRUNCATE
[1] [2] The interface of an object conforming to this pattern would include functions such as Insert, Update, and Delete, plus properties that correspond more or less directly to the columns in the underlying database table. The active record pattern is an approach to accessing data in a database. A database table or view is wrapped into a class.
If a spreadsheet contains dates, Smartsheet creates a calendar view. [9] Each row in a smartsheet may have files attached to it, emails stored within it, and a discussion board associated with it. [5] [9] When a new smartsheet is created, notifications are pushed out to staff to populate its rows and columns. [10]
An American World War II warship that played a key role in Allied campaigns in the Pacific has been discovered at the bottom of the Indian Ocean more than 80 years after it was sunk.. The U.S.S ...
No, it's not a sandwich.
Let cool, then remove cups from muffin tin. Pour about 1 Tbsp. chips into each cookie and spread around bottom and up edges. Dip into sprinkles (if using). Refrigerate until set, about 20 minutes. ...
The same information can be expressed on multiple rows; therefore updates to the relation may result in logical inconsistencies. For example, each record in an "Employees' Skills" relation might contain an Employee ID, Employee Address, and Skill; thus a change of address for a particular employee may need to be applied to multiple records (one ...
In SQL, the data manipulation language comprises the SQL-data change statements, [3] which modify stored data but not the schema or database objects. Manipulation of persistent database objects, e.g., tables or stored procedures, via the SQL schema statements, [3] rather than the data stored within them, is considered to be part of a separate data definition language (DDL).