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:
Survey data are collected by using all of these methods except Field Research.
Explanation:
In field research data has been gathered from different experiments, qualitative analysis and observations of any event.
On the other hand, survey data can be collected from Following:
<u>structured interview</u><u>:</u>
where data can be gathered by interviews and analyzed it on quantitative basis.
<u>Face to face questionnaires:</u>
Data has been collected by asking questions directly from users in the form of interview.
<u>self-administered questionnaires</u>
In this research, questionnaire has been designed to asked question related to some topic without conducting interview.
Answer:
Database Management Software.
Explanation:
The software that provides the mechanism to access the database is called Database Management Software.There are two types databases SQL and No SQL.There are various types of database Management Software present online for ex:-My SQL,Microsoft SQL server,Microsoft Access,Postgres SQL,Mongo DB etc.
As we change password when
1. we forgot the previous password.
2. when the previous password is leaked due to some reasons.
In case 1 we can change the password to the same as well with no change the problem will be solved but for case 2 at least one or for more safety all characters should be changed.
