PostgreSQL can use an index to access a table. Select two incorrect statements about indexes.
A. An index is created by 'CREATE INDEX', and deleted by 'DROP INDEX'.
B. By using an index effectively, searching and sorting performs faster.
C. There are B-tree, Hash, R-tree and GiST index types.
D. By creating an index, performance always improves.
E. Creating an unused index does not affect the performance of a database at all.
Select two incorrect statements regarding 'DOMAIN'.
A. When defining a domain, you can add a default value and constraints to the original data.
B. Domain is a namespace existing between databases and objects such as tables.
C. A domain is created by 'CREATE DOMAIN'.
D. A domain can be used as a column type when defining a table.
E. To define a domain, both input and output functions are required.
Nowadays, the certification exams become more and more important and required by more and more enterprises when applying for a job. But how to prepare for the exam effectively? How to prepare for the exam in a short time with less efforts? How to get a ideal result and how to find the most reliable resources? Here on Vcedump.com, you will find all the answers. Vcedump.com provide not only PostgreSQL-CE exam questions, answers and explanations but also complete assistance on your exam preparation and certification application. If you are confused on your PGCES-02 exam preparations and PostgreSQL-CE certification application, do not hesitate to visit our Vcedump.com to find your solutions here.