Which of the following SQL statements are syntactically correct and which are not?

What does L=0 in L .. H cardinality limits indicate? 

Consider query that counts the number of dog owners in each zip code for given set of zip codes. We only look for dog owners who are clients of the veterinary clinic from before the year 2000 (including year 2000). Choose the order in which the statements should be written.

Identify attributes for each category, where attributes are from the ER diagram illustrated in Figure 2. Figure 2. ER diagram for a spa salon. 

Identify complex attributes in the entity set illustrated in Figure 2. Figure 2. Entity set agent.  

Which of the following relational schemas are reduced from the relationship set includes illustrated in Figure 4. Figure 4. ER diagram.

Normalize the following schema, with given functional dependencies, to BCNF normal form: books(accessionno, isbn, title, author, publisher) users(userid, name, deptid, deptname) Functional dependencies:  accessionno → isbn isbn → title isbn → publisher isbn → author userid → name userid → deptid deptid → deptname

In the BCNF decomposition algorithm, suppose you use a functional dependency to decompose a relation schema into and . What primary and foreign-key constraint do you expect to hold on the decomposed relations?

Suppose you wanted to use public-key cryptography to submit a final paper so that only your instructor could read it. What information would you encrypt?  

During transcription, the sequence of one strand of a DNA molecule is copied into a related molecule, known as: