Enroll a student identified by her snum into the class named 'Introduction to Database Systems' is the following transactions, state the SQL isolation level you would use.
1. Enroll a student identified by her snum into the class named 'Introduction to Database Systems'.
<u>Explanation:</u>
Since enroll is unique in the university enrollment database schema and field name is SNUM and it is data type is an integer. To identify student class name and department name and name of student SNUM field is used for searching in university enrollment database schema. Enrollment changing is not possible of the student’s not possible or not good practices in university enrollment database schema.
If a query had been made class wise or department wise enrollment is played an important role.
For assign, a faculty is made on the class id or department id.
Answer:
False
Explanation:
No app icon on app's action bar will move the device to its home screen.It is not a valid statement.
Answer: Mesh
Explanation:
Mesh network is network topology in which network nodes are directly connected with infrastructure nodes in active manner without following any hierarchy. This interconnection is made for continuous transmission of data through the network path.It can work even if any particular connection or node faces fault.
- Z-wave commonly uses mesh topology for connecting the nodes to facilitate the home devices in wireless manner along with hub.
- Zigbee also uses mesh topology for proving services at low cost to homes and other areas in wireless form also having router or hub as the linking device.
Test.java
The classname and the filename need to match (case sensitive).
Answer:
The answer is "Option d"
Explanation:
In this question, the easiest way that will save the payment on your database in such a process ID-sorting list would be to mark a payment, that's been recorded mostly on the database whenever this payment became used serial number is not transaction ID, and the wrong choice can be defined as follows:
- In choice a, It is wrong because it may be processed, however, payments aren't entered through our process, which does not help remove older.
- In choice b, the unordered list would not enable any transaction to only be retrieved, that's why it is wrong.
- In choice c, it will not be helpful because the includes video is either begin or complete the payment, it will not be helpful to hold it with transaction time.
- In choice e, this approach won't help to identify the payments since one date will have a lot of payments over a certain account.
