In SQL, table names are case sensitive.
Added by Joseph S.
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are not case sensitive. This means that you can write them in uppercase, lowercase, or a combination of both and the SQL engine will interpret them the same way. Show more…
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Most languages are case-sensitive, so keywords can only be written with the rules of the keyword (case-sensitive), and the Regular Expression (RE) which describes the lexemes is very simple. However, some languages such as SQL are not case sensitive, so keywords can be written in lowercase or uppercase, or in any mixture of letters. So, the SQL SELECT keyword can also be written as "select", "Select", or "sElEcT". Question Explain how to write a Regular Expression to accept keywords but is not case-sensitive. (You can create it by providing examples of Regular Expressions for the introduction of certain keywords)
Madhur L.
Q3: The following code may have the SQL injection vulnerability. "abc" (in a pair of double quotes) is a string. Show the exploitation that always makes a true condition of the following query. $id and $ssn are the inputs provided by the user. "select name from students where (id = '$id' and ssn = '$ssn');"
Akash M.
PL/SQL procedure, parse_name, which accepts a string representing names and returns the first name, the last name, and the title. The first name and last name returned from the procedure should be in uppercase while the title returned should preserve the original case. The input name string is in one of the following two formats: FIRST_NAME LAST_NAME TITLE LAST_NAME, FIRST_NAME TITLE. The first format depicts that the name string starts with a person's first name and last name with a space in between, followed by a space, and then the title of the person. On the other hand, the second format states that the name string starts with a person's first name, followed by a comma and a space, and then the last name suffixed with the title with a space before it. The following are examples of valid name strings conforming to the formats: 1) Jane Doe Ms. 2) Doe, Jane Ms. Your procedure should return JANE for the first name, DOE for the last name, and Ms. for the title for the above two input strings. Also, the following are examples of valid name strings conforming to the formats: 1) Jane Doe MS. 2) Doe, Jane MS. Your procedure should return JANE for the first name, DOE for the last name, and MS. for the title for the above two input strings. Your procedure should generate exceptions if any one of the three components of the input name string is missing. Further, a message should be printed indicating that the input string is invalid. For instance, the following input strings should cause an exception to be generated and the appropriate messages printed: 1) Doe 2) Jane Doe 3) Doe, Jane You should wrap parse_name within an anonymous PL/SQL block that accepts the name string through SQL*Plus substitution variables, calls parse_name with the input string, and then prints the first name, last name, and title returned from the parse_name procedure. You should print the title first, followed by the first name and then the last name, separated by spaces.
Supreeta N.
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