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In physical database design, referential integrity constraints can be defined. What actions does referential integrity constraint prevent from happening when data is inserted in table which contains this constraint? Let INSERT, UPDATE, and DELETE actions on both child and the parent.
How and why did database management systems become the organizational data management standard? Describe some advantages of database approach over file-system approach.
Course: data mining. Require a 7 page essay on subjects: Warehouse Architectures: the paper requires to contain information about centralized, federated, and tiered data warehouse.
What are the functional dependencies among the data represented in this first normal form relation?
Write a Assignment to study and modify the PostgreSQL source code, with a focus on one of the core modules - the buffer manager
What are triggers used for, and why are they significant in database systems? Give an example of situation where a trigger would be appropriate. What would implementation of this trigger look like?
These following questions require to you to create entities and their relationship using the Crow's Foot notation suitably.
Create an arff file with the following data types, flags, unit_id, names must be nominal and timestamps (ts) must be date
Create the database using three tables: one for student information, one for advisor information, and one for department information.
Describe relationships with example. Also illustrate degree of relationship for that example. What do you mean by locks. Write dow a binary lock function.
Indicate the changes (using the shorthand representation) that you would need to make to the original premiere products database desing to support the following requirements.
Recognize input data required for each of processes. Recognize logical name for each data output item and kind of data output (real number, integer, text).
Why do you believe that views by themselves are insufficient for protecting access by unauthorized users?
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