...where relational integrity is secondary to transactional integrity and capacity/performance is critical. In correctly constructed transactional systems the business object and its internal data structure bec
What does it mean to be a primary and secondary user of the data? What is the primary purpose of a data warehouse? A combination of several columns that together serve as the primary key is called what? (a) foreign key (b) composite key (c) candidate key. ...
They’re often used to create indexes, which makes it easier and quicker to find specific records when running queries. How Does a Primary Key Work? Here’s a simple breakdown of how a primary key works: Uniqueness No two records in the table can have the same primary key value. The ...
If a DBMS enforces a DELETE RESTRICT option on the referential integrity constraint between CLIENT and AGENT in the HAPPY INSURANCE database, what will be the outcome after a user tries to delete the What does it mean to be a primary and secondary user of the data? 1. ...
Another significant disadvantage associated with IOTs that have Secondary Indexes … There’s a bit more I’ll like to say on the subject but I’ll leave it for a Part II IOT Secondary Indexes: Primary Key Considerations (Beauty And The Beast) April 11, 2012 Posted by Richard Foote in ...
in a special Cutoff Index that is consulted only when queries for low-probability values are run. We also propose several other op- timizations, including techniques to improve secondary index per- formance and techniques to reduce maintenance costs and fragmen- ...
What does it mean to be a primary and secondary user of the data?What function does an attribute of an entity perform in a DBMS?You are creating a table called Department with fields for the primary key DeptID (Integer) and department name (VARCHAR). What (if anything) is wrong wi...
What are the disadvantages of adding indexes to a database table? What are big data tools? How does a DBMS provide data security? How does cardinality affect database design? What are the main considerations in processing big data? What are the disadvantages and advantages of database approache...