This example collection of OSS-DB Exam Silver.

* OSS-DB certification exam Silver is an example of OSS-DB Exam Silver.

* 1 Question 1 Answer method is ideal for studying in gap time such as commute or school attendance.

* We have more than 190 questions that correspond to PostgreSQL 9.0 and higher.

* This is a sample question published at EDUCO.

- The comment displayed in this application has changed part of the original content.

* It corresponds to the problem of selection formula and input formula.

* In the example list, the problem that could be answered correctly is displayed in green, the problem in which the user answered by mistake is displayed in red, and the problem in unanswered answer is displayed in blue.

* With the search function, you can filter only the problems you care about.

* You can easily review problems that you are not good at using the bookmark function and incorrect problems.

* We change the order of choices every time, so we do not remember the answer in "position".

* If you do not have an exam schedule for certification exams, you can use it to check skills of PostgreSQL.

* Since the output result of the command may be displayed in the explanation, it becomes easier to read if you set the smartphone to landscape (landscape display)>.