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Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
What is Identity? Identity (or AutoNumber) is a column that automatically produces numeric values. A start and increment value can be set, but most DBA leave these at 1. A GUID
(a) Differentiate between information and data . (b) List and briefly explain five potential benefits of the database approach compared to conventional file systems. (c) Diff
What are the General Transformation Rules for Relational operations? Ans: The transformation rules transform one relational algebra expression to AN EQUIVALENT ONE 1. E
Define multivalued dependency and 4NF. Ans: Multivalued Dependency - Assume R be a relation schema and let α ⊆ R and β ⊆ R. The multivalued dependency α →→β holds o
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
Explain What is Relation? A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.
What is an object ID? Each class-derived table has an ID for primary key, one or more object IDs form primary key for association derived tables. An object ID is equivalent dat
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