CONCEPTS OF DATABASE MANAGEMENT
9th Edition
ISBN: 9780357323366
Author: Pratt
Publisher: CENGAGE C
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Chapter 6, Problem 12RQ
To determine
Describe the entity-relationship model. Represent the entities, relationships and attributes. Also, describe the approach for crow’s foot and cardinality in an E-R diagram.
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Convert this question to Subroutines
ORG 100
LDA A1
STA T1
LDA B1
STA T2
LDA T1 I
STA A1 I
ISZ B1
ISZ A1
ISZ ENC
BUN L2
//COMPUTER
HLT
L1,
INC
A1,
HEX 5000
STA T2 1
B1,
HEX 6000
ISZ T1
T1,
HEX O
ISZ T2
T2,
HEX 0
ISZ DCD
DCD,
DEC -8
BUN L1
// DPNQVUFS
ENC,
DEC -8
LDA B1 I
DEC,
HEX FF
L2,
ADD DEC
END
Convert this question to Subroutines
> F = [(A. B) + (A'. B')]” = [(A. B)'. (A'. B')']'
ORG 100
LDA A
// Load A operand to AC
HLT
// END Program
AND B
CMA
STA T1
LDA A
CMA
STA T2
LDA B
CMA
AND T2
CMA
// Store AC result in T1
// Load A operand to AC
// Complement result in AC
// Store AC [A'] result in T2
// Load B operand to AC
// Complement result in AC
// AND B' with T2[A'] operand
// Complement result in AC
AND T1 // AND [(A'.B')'] with T1[(A.B)']
CMA // Complement result in AC
STA F // Store AC result in F
// AND A operand with B operand
B,
HEX 01
// Complement result in AC
A,
HEX 01
T1,
HEX O
T2,
HEX 0
F,
HEX 0
END
Convert this question to Subroutines
L1,
L2,
ORG 100
SKI
BUN L1
INP
OUT
STA CTR
CLA
// Check input operation ready
// Loop back to L1 location
// Enter counter (-10) to AC
// display counter operand
// Store counter in CTR
// Clear AC
STA LOCI // Clear content of location LOC
ISZ LOC
ISZ CTR
BUN L2
// Go to next Address
// Check loop duration
// Loop back to L2 location
// End program
HLT
CTR,
HEX 0
LOC,
HEX 0150
END
Chapter 6 Solutions
CONCEPTS OF DATABASE MANAGEMENT
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