Problem 20.a Using MySQL, create a table named CUST_MYSQL with the same fields as in Problem 16, except, use the AUTO_INCREMENT feature for the CUST_NUM field. Problem 20.b Using MySQL, alter the table to populate the CUST_NUM field, beginning the increment with 2000.
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
Problem 20.a
Using MySQL, create a table named CUST_MYSQL with the same fields as in Problem 16, except, use the AUTO_INCREMENT feature for the CUST_NUM field.
Problem 20.b
Using MySQL, alter the table to populate the CUST_NUM field, beginning the increment with 2000.
Problem 20.c
Using MySQL, populate the CUST_LNAME, CUST_FNAME, and CUST_BALANCE fields with the following customers:
| CUST_LNAME | CUST_FNAME | CUST_BALANCE |
|---|---|---|
| Smith | Jeanne | 1050.11 |
| Ortega | Juan | 840.92 |
Problem 21.a
Using MySQL, create a table named INV_MYSQL with the same fields as in Problem 17, except, use the AUTO_INCREMENT feature for the INV_NUM field. Do not create a FOREIGN KEY constraint.
Problem 21.b
Using MySQL, alter the table to populate the INV_NUM field, beginning the increment with 9000.
Problem 21.c
Populate the CUST_NUM, INV_DATE, and INV_AMOUNT fields with the following customers:
| CUST_NUM | INV_DATE | INV_AMOUNT |
|---|---|---|
| 1000 | 2016-03-23 | 235.89 |
| 1001 | 2016-03-23 | 312.82 |
| 1001 | 2016-03-30 | 528.10 |
| 1000 | 2016-04-12 | 194.78 |
| 1000 | 2016-04-23 | 619.44 |
Problem 22
Insert the following customer into the CUST_MYSQL table, allowing the AUTO_INCREMENT attribute set up in Problem 20.a and Problem 20.b to generate the customer number automatically:
| CUST_LNAME | CUST_FNAME | CUST_BALANCE |
|---|---|---|
| Powers | Ruth | 500 |
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