[2] Each of the following lines of code generates an error message when we invoke the assembler. Explain what is wrong with each line. [ espl, 4[ esp],[ eax] sh , ah 2 mov ax 3 mov 4 mov 5 mov Ох123, еах eax 6 mov dx, eax 7 mov 8[ ebp], si
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- The most important tables in the library information system are the following. Books (bid, author, title, publisher, year); Members (mid, name, surname, address, telephone); Rental (rid, mid, bid, eid, date); Employee (eid, name, surname, address, telephone) All tables are sorted according to the key. The following information is given. 1 page on the disk = 8KB |Books| = 1.000.000 records, 320 bytes, 25 records/page, 40000 pages |Members| = 10.000 records, 200 bytes, 40 records/page, 250 pages |Rental| = 300.000 records, 40 bytes, 200 records/page, 1500 pages |Employee| = 100 records, 200 bytes, 40 records/page, 3 pages We can have 25.000 pages in the buffer. QUESTION 2.1 B+ index is used on the attribute Books.publisher. The size of the record identifier is 8B, the size of the page identifier is 6B. Calculate the size of the B+ index whose pages are filled to their minimum capacity as accurately as possible. Write down all assumptions.iIllustrate how a binary semaphore can be used to implement mutual exclusion among n processes.Question 1 A) Divide and Conquer (Mergesort) sorting Start 45 31 78 69 98 20 55 30 B) SHELL sorting (Tokokan 4,2,1) Start 45 31 78 69 98 20 55 30
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- 5. Let a database contain initial values x=3, y=6, z=9 Suppose the logging-and-recovery scheme uses deferred update, the log can contain only the after-image values, that is, log records for write_item operations have only a single value. The new value of database element written. let the log contain the sequence of records:[Checkpoint][start_transaction, T1][write_item, T1,x,6][write_item, T1,y,9][commit, T1][start_transaction, T2][write_item, T2,x,9][start_transaction, T3][write_item, T3,y,12][write_item, T3,z,12][commit, T3][write_item, T2,y,3]Determine all the possible values of data items x, y, and z that might be written on disk during the execution of the above log operations. a) x=6, y=6, z=9 b) x=9, y=9, z=9 c) x=9, y=9, z=12 d) x=9, y=12, z=9 which one ?Which of these describes how an item in a linked data structure is accessed? a.accessed by hashing its value b.immediately accessed via a base address and offset c.accessed by starting at one end and following the links until the item is reached d.immediately accessed via an index e.accessed via a binary search113. Banker's algorithm for resource allocation deals with a. deadlock prevention b. deadlock avoidance c. deadlock recovery d. mutual exclusion