Answer:
The very first command contains an error.
Explanation:
The create query is used to create the table in the database. The syntax of the create query is :
create table tablename(column1 datatype,column2 datatype ........columnn datatype);
So there is a keyword table is missing in the given query.
so it is incorrect query.
INSERT INTO vehicletype VALUES (1,"truck","Ford",2000); This query is correct.
SELECT * FROM vehicletype; This query is also correct.
Answer:
5 MB.
Explanation:
1 foot = 12 inches
2400/9=266.66 feet per track
1 track excluding, remaining 8 track =2400 - 266.66 = 2133.33 feet
so, space available to store data = 2133.33 feet
now, 2133.33 feet = 25600 inches
total data that can be stored = 25600 * 1600 = 40960000 bits
= 46080000/8 = 5120000 Bytes
= 5120000/1000000 = 5.12 MB = 5 MB (approx.)
Answer:
see explaination
Explanation:
a)
customerRecord.lastName
b)
customerPtr->lastName or (*customerPtr).lastName
c)
customerRecord.firstName
d)
customerPtr->firstName or (*customerPtr).firstName
e)
customerRecord.customerNumber
f)
customerPtr->customerNumber or (*customerPtr).customerNumber
g)
customerRecord.personal.phoneNumber
h)
customerPtr->personal.phoneNumber or (*customerPtr).personal.phoneNumber
i)
customerRecord.personal.address
j)
customerPtr->personal.address or (*customerPtr).personal.address
k)
customerRecord.personal.city
l)
customerPtr->personal.city or (*customerPtr).personal.city
m)
customerRecord.personal.state
n)
customerPtr->personal.state or (*customerPtr).personal.state
o)
customerRecord.personal.zipCode
p)
customerPtr->personal.zipCode or (*customerPtr).personal.zipCode
The correct answer is 1234.
In order to keep the plane travelling at a constant speed, an automatically controlled feedback loop is more reliable.
<u>Explanation:</u>
The main reason behind this is that the plane needs to travel at a constant speed and that would only be maintained by setting constant feedback for the loop.
The feedback being constant will correspond to constant input which will, in turn, correspond to a constant output and hence constant speed.
In the case of using a manually controlled feedback loop, feedback will have to be provided manually at each iteration which is not practically viable as there is a scope for errors.
