nsert at least three rows into your EMPLOYEE_xx table. Use the next value of the sequence you created , EMPL_SEQUENCE_xx as the value for the employee ID for every row inserted. You may choose values for the other columns Test your constraint on the rate column by trying to update a row in the EMPLOYEE_xx table with the value of 6 used for the Pay Rate (you choose the row). Drop your EMPLOYEE_xx table and make sure it HAS been purged from the recyclebin
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.
Insert at least three rows into your EMPLOYEE_xx table. Use the next value of the sequence you created , EMPL_SEQUENCE_xx as the value for the employee ID for every row inserted. You may choose values for the other columns
Test your constraint on the rate column by trying to update a row in the EMPLOYEE_xx table with the value of 6 used for the Pay Rate (you choose the row).
Drop your EMPLOYEE_xx table and make sure it HAS been purged from the recyclebin
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