The index is to speed up retrieval table data. Database index is similar to the index of books. In the book, the index allows the user to complete a book you can not read quickly find the information they need. In the database, the index also allows the database program to quickly find data in the table, without having to scan the entire database. 2. Index decreased database insert, update, delete, maintenance tasks such as the speed 6. Using the query processor executes SQL statements on a table, one can only use an index of 1. Create unique index, ensure that each database table the uniqueness of a row of data
In fact, the training of accounting data to promote student attention, MBA education, it is only stimulate the creativity of students. Analysts said Steven Hall: "CFO of the funds to improve the effectiveness of the quality is very important. But in this issue more prominent." Lynn Turner is a former SEC chief accountant, he was a lot of people do not understand the companys financial accounting basic principles of surprise. He cited a typical example: Texas, he received a call from a company that they audit and the SEC staff had an argument. Later, the companys lawyer told the Turner, the companys CFO did not learn accounting, is a marketing staff.