Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
An employee record has the following structure struct employee { int eno; char name[22]; float salary; char dept[10];};(i) Calculate the record size R in bytes.(ii) If the file has 500 records, calculate the blocking factor bfr and the number of blocks b, assuming an unspanned organization with block size B = 512 bytes.(iii) Describe the unused space in each block and in the last block?
Ans: (i) 2 + 22+ 4 + 10 =38 bytes (ii) bfr = floor( B/R) = [512/38] =13 Number of blocks b = ceiling (500/13) =39 (iii) Unused space in each block = 512 - 38 *13 = 512 - 494= 18 bytes Unused space in the last block = ( 39 *13 - 500) * 38 bytes = (507 -500) * 38 bytes = 7 * 38 =266 bytes
Question: (a) Define the term e-Government and briefly explain, using appropriate examples, the aspects it covers. (b) Give four reasons as to why a country should adopt e
What is entity in DBMS? Entity: A DBMS entity is either a thing in the modelled world or a drawing element in an ERD.
Define check point and its impact on data base recovery. Ans: There could be hundreds of transactions handled per minute, in a large on-line database system.
sql is relationally complete-justify
Differentiate between strict two-phase and rigorous two-phase with conversion protocol Ans: Strict two-phase locking holds all its exclusive that is write locks until commit t
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
a) Distinguish between ‘database' and ‘Database Management Systems (DBMS)'. b) List and briefly describe five potential benefits of the database approach compared to conventio
Why do so various organizations use MySQL? Advantages: Open source Highly efficient Offers a high scalability in terms of size and connectivity. Highly prote
Describe the host language? Host Language: You could write applications along with SQL statements embedded inside a host language. The SQL statements give the database inter
The functions of DBA ?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd