1. If a user has only read authorization for the database, can he modify the data in the database? 2. If a user has only read authorization for the database, can he retrieve data from the database?

How do you check whether a record in a database exists?

Q1.) An integrity constraint is a rule that:   a. is kept in an external file      b. must be followed by data in the database      c. can be accessed by authorized users    d. can unintentionally be accessed by unauthorized users   Q2. __ is a property that lets you change the structure of the database without requiring you to change the programs that access the database.   a. Database design b. Data independence                     c. Integrity constraint        d. Data dependence   Q3. The basic form of an SQL retrieval command is:   a. SELECT-WHERE-FROM              b. CREATE-SELECT-FROM c. SELECT-WHERE d. SELECT-FROM-WHERE   Q4. Which of the following queries will list the number, name, credit limit, and balance for all customers with credit limits that exceed their balances.   a. SELECT CustomerNum, CustomerName FROM Customer WHERE CreditLimit>Balance ; b. SELECT CustomerNum, CustomerName, CreditLimit, Balance FROM Customer WHERE CreditLimit>Balance ; c. SELECT…

Is it possible for a user's effort at adding data to the database to result in the creation of a record that breaks an enabled constraint?