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হোম›একাদশ-দ্বাদশ শ্রেণি›English Version›Information and Communication Technology›C-06 — Database Management System›C-06-Q079

C-06-Q079mediumsingle_mcq

The operation of retrieving data from multiple related tables at once is called —

aa merge
ba join
ca union only
da backup

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এই অধ্যায়ের আরও প্রশ্ন

C-06-Q080In a join query where both tables have a column named roll, why is result.roll written instead of just roll?
C-06-Q081In the join query, which condition part actually joins the two tables?
C-06-Q082To see every student's joined data (not just roll 1), what must be removed from the join query?
C-06-Q083Why should regular and frequent backups of a database be generated?
C-06-Q084Erroneous data caused by issues of hardware, software or networks is known as —
C-06-Q085Why are backups usually stored in separate physical drives?
C-06-Q086Why are data centers usually located in different geological locations?
C-06-Q087Consider the following statements about database security: Which of the following is correct?
C-06-Q088According to the chapter, which databases offer many types of extensive security protections, unlike SQLite?
C-06-Q089The branch of computer science that deals with data encryption is known as —

C-06 — Database Management System — সব প্রশ্ন দেখুন (143টি) →