Personal Activities Calendar Program - What Goes Into MySQL Database Tables - 2
But wait! We don't need to store the date and time information AND the corresponding timestamp in the database. All we really need to store is the act_timestamp_1 and act_timestamp_2 because these timestamps contain the indiviual date and time information. So that reduces the table fields to just these six. act_ID act_title act_desc act_timestamp_1 act_timestamp_2 act_status Now that we know what pieces of data or information that will be stored for each activity, we also need to tell MySQL what type of data is in each field. For example, is it a numeric value or a character string? What is the size of the data? What will be the default value or can there be no data (null). MySQL has a list of data types (definitions or descriptive words) that you can use for this purpose. Here is a list of the most frequently used and you can find a complete list at the MySQL website (https://dev.mysql.com/doc/mysql/en/column-types.html). However, in our example, we will not use all of these. There are three types of data fields in our example (integer, variable character and text). MySQL Data Types for Activities Table
So, what would this table look like with data stored in it? Well, the data for each activity will be stored altogether and this group of data is called a record. So two activities will result in two records in the table.
Here is what the sql code will look like. As you can see, we first connect to the server as you learned in a previous tutorial. The field names and descriptions are placed between the parenthesis, i.e. between activities(...). Each field name and its description ends with a comma. The entire code is placed between the quotation marks for the sql statement. $sql = ""; ← Back | ||||||||||||||||||||
This site needs an editor - click to learn more!
Related Articles
Editor's Picks Articles
Top Ten Articles
Previous Features
Site Map
Content copyright © 2023 by Diane Cipollo. All rights reserved.
This content was written by Diane Cipollo. If you wish to use this content in any manner, you need written permission. Contact
BellaOnline Administration
for details.