Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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What are the two ways that the Substitute User identity command can be invoked? Give one example (i.e. write down the command) for each of these two
.Which function is used to perform some action when the object is to be destroyed?
a) finalize()
b) delete()
c) main()
d) none of the mentioned
Can you please do the 2nd question above (Access)?
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- When we say "triggers," what precisely do we mean? But what are their actual functions? By following these easy instructions, you may harness the power of a trigger in Access 2016.arrow_forwardWhich of the following commands is used to assign a privilege to a role?(refer to the JustLee Books database).a. CREATE ROLEb. CREATE PRIVILEGEc. GRANTd. ALTER PRIVILEGEarrow_forwardCreate another application/class named EmployeeDatabase that allows you to store anarray that acts as a database of any number of Employee objects up to 25. While the userdecides to continue, offer three options: to add a record to the database, to delete a recordfrom the database, or to change a record in the database. Then proceed as follows:If the user selects the add option, issue an error message if the database is full.Otherwise, prompt the user for an Id. If the Id already exists in the database, issuean error message. Otherwise, prompt the user for rest of the inputs and add the newrecord to the database.If the user selects the delete option, issue an error message if the database is empty.Otherwise, prompt the user for an Id. If the Id does not exist, issue an error message.Otherwise, delete the record.If the user selects the change option, issue an error message if the database is empty.Otherwise, prompt the user for an Id. If the requested record does not exist, issuean…arrow_forward
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