Answer:
z = a.c' + a.b.d' + b.c'.d'
Explanation:
The truth table for this question is provided in the attachment to this question.
N.B - a' = not a!
The rows with output of 1 come from the following relations: 01 > 00, 10 > 00, 10 > 01, 11 > 00, 11 > 01, 11 > 10
This means that the Boolean expression is a sum of all the rows with output of 1.
z = a'bc'd' + ab'c'd' + ab'c'd + abc'd' + abc'd + abcd'
On simplification,
z = bc'd' + ab'c' + ac'd' + ac'd + abc' + abd'
z = ac' + abd' + bc'd'
Hope this helps!
Answer: Multi-user issue
Explanation: A database management system scheme can have multi-user issue when the designing of the system is not made properly. The multi user issue rises when the users concurrently access the data from the database and related error get invoked due to some reason like repeatable reading issue, serialization, etc.
The reading problem is usually can be related to reading of the database in uncommitted manner, uncommitted reading, repeatedly reading etc.Thus, Cora and Owen are accessing the database concurrently which can create multi-user issue.
Answer: Federation
Explanation:
In multiple enterprises there are number of authentication processes to access resources and information so in order to avoid a large number of authentications we have a process called federation whereby all the authentication and authorization processes are passes from one system to the other within the enterprise.
Answer:
How do I change the font color in swing?
To set the font and color of JTextArea we can use the setFont() and setForeground() methods of the JTextArea . To create a font we must define the font name, the font style and its size. For the colors we can uses the constant color values defined by the Color class.
Explanation:
