One of the tables that resulted from the DBA denormalizing some of the data in the TAL Distributors database so as to boost performance is as follows: Which field or fields in the Customer table (CustomerNum, CustomerName, Street, City, State, PostalCode, Balance, CreditLimit, RepNum, RepName) are responsible for the table no longer being in third normal form? In this scenario, what does the n

The CUSTOMER table contains a foreign key, REP_NUM, that must match the primary key of the REP table. What type of update(s) to the CUSTOMER table would violate the foreign key constraint?

Ensure that the only legal values for the BDRMS column in the CONDO_UNIT table are 1, 2, or 3.

Problems 27 and 28 are based on the following query: SELECT P_CODE, P_DESCRIPT, P_QOH, P_PRICE, V_CODE FROM PRODUCT WHERE P_QOH P_MIN AND P_MIN = P_REORDER AND P_REORDER = 50 ORDER BY P_QOH; What indexes would you recommend? Write the commands to create those indexes.

Write the SQL code that will restore the data to its original status: that is, the table should contain the data that existed before you made the changes in Problems 5 and 6.

Modify the CHARTER table to add the attributes shown in the following table. TABLE P8.37 ATTRIBUTES AND VALUES FOR PROBLEM 37 ATTRIBUTE NAME ATTRIBUTE DESCRIPTION ATTRIBUTE TYPE CHAR_WAIT_CHG Waiting charge for each model (copied from the MODEL table) Numeric CHAR_FLT_CHG_HR Flight charge per mile for each model (copied from the MODEL table using the MOD_CHG_MILE attribute) Numeric CHAR_FLT_CHG Flight charge (calculated by CHAR_HOURS_FLOWN CHAR_FLT_CHG_HR) Numeric CHAR_TAX_CHG CHAR_FLT_CHG tax rate (8%) Numeric CHAR_TOT_CHG CHAR_FLT_CHG + CHAR_TAX_CHG Numeric CHAR_PYMT Amount paid by customer Numeric CHAR_BALANCE Balance remaining after payment Numeric

Determine the functional dependencies that exist in the following table, and then convert this table to an equivalent collection of tables that are in third normal form. LOCATION (LOCATION_NUM, LOCATION_NAME, (UNIT_NUM, SQR_FT, BDRMS, BATHS, CONDO_FEE))

Create the table that results from applying an INTERSECT relational operator to the tables shown in Figure Q3.13. FIGURE Q3.13 THE CH03_VENDINGCO DATABASE TABLES

Do the tables exhibit referential integrity? Answer yes or no, and then explain your answer. Write NA (Not Applicable) if the table does not have a foreign key. FIGURE P3.17 THE CH03_TRANSCO DATABASE TABLES