Question

23-True -False:User-defined words are a fixed part of SQL and have a fixed meaning- 24-True .False: If we store a person's surname as "SAMUEL" and then search for it using the string "Samuel", the row will not be found. 25-True O-FalseAn SQL identifier such as a table name can be no longer than 64 characters. 26-True -False:cOUNT, SUM, and AVG apply to both numeric and nonnumeric fields. 27-True -False □ : The referential action CASCADE allows to delete a row from the parent table and automatically delete the matching rows in the child table. 28-Create an ER model for the following descriptions: - Doctors, nurses, and patients have the following unique numbers respectively: doctorNo, nurseNo, and patientNo. - A doctor can examine any number of patients; and each patient is examined by 1 doctor - A nurse can observe any number of patients; and a patient is observed by 1 or 2 nurses. A specialist nurse can supervise from 0 to 5 practical nurses; and each practical nurse is supervised by I specialist nurse. Each nurse many nurses. reports symptom s to 1 doctor, and each doctor can receive symptom reports from

Answer 1

Please Note:
As per Chegg Answering Guidelines, I should answer the first question.
Here, I have answered the first 2 questions.
Please Re-Post for other Questions.

23. Answer)
User-defined words are a fixed part of SQL and have a fixed meaning - False, It would be Reserved words which are a fixed part of the SQL language and have a fixed meaning.

24. Answer)
If we store a person's surname as 'SAMUEL' and then search for it using the string "Samuel", the row will not be found - True, Yes that way SQL content is case sensitive and thus it cannot be found.