Related Questions

On-line transaction processing is used when ______________. I) it is required to answer random queries. II) it is required to ensure correct processing. III) all files are available on-line. IV) all files are stored using hard disk.
A i, ii
B i, iii
C ii, iii, iv
D i, jj ,iii
Batch files contain a group of MS-DOS commands that are run in successive order. What filename extension identifies batch files?
A COM
B BAT
C EXE
D SYS
E None of the above
Semiconductor memory device in which stored data will remain permanently stored as long as power is supplied is --
A dynamic memory device
B storage device
C flash device
D static memory device
A computer file contains several records. What does each record contain?
A Bytes
B Words
C Fields
D Database
E None of the above
The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types.
A Database
B Table
C Flat file
D Data structure
E None of the above
A data element in a record, that uniquely distinguishes the record, from all other records, is called
A response time
B Key
C System review
D test data
E None of the above
In a class composed of x girls and y boys what part of the class is composed of girls ?
A y / ( x + y )
B x / xy
C x / ( x + y)
D y / xy
In a class composed of x girls and y boys what part of the class is composed of girls.
A y / (x +y)
B x / xy
C x / ( x +y)
D y/ xy
দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)
A 1/4
B 1/2
C 1
D 2
The pending invoice file should be stored on a DASD (Direct: Access Storage Device) if
A payment execution is batch
B invoice data entry is one-line
C inquiries concerning payable are to be answered on-line
D All of the above
E None of the above

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