e.  Listing Types and Listing Fields

The system provides an opportunity to classify listings. For this purpose administrator can divide listings into different types. It expands site capabilities (e.g., a site owner can sell cars and houses on the same site) and increases its usability (listings will be arranged). Using ‘Listing Types’ administrator can allow users to add classifieds of different types, make a complex search (a search by different types) and a search by a particular type.

Listing Fields are common for all listing types. They are aimed to display the common characteristics of all listing types.

Listing Type is a group of listings united according to common specific characteristics. Listing types allow administrator to create fields for a certain listing type. These fields will display the specific characteristics of a particular listing type. E.g., let's suppose you have two listing types in the system: Jobs and Resumes. The listing field 'Job Category' will be common for the both listing types,  the listing field 'Salary' will be specific for the listing type 'Job'.

You may find more detailed information about Listing Fields and Listing Types in the sections 'Listing Fields' and 'Listing Types'.

The system also contains system fields. System fields are fields strictly defined in the system and can't be added, changed or deleted via the administration panel. There are the following system fields: id, username, active, keywords, featured, views, pictures, activation_date, expiration_date. These fields contain the following data:

       • id – unique listing IDs;

       • username – usernames of users;

       • active – shows whether listings are active or not (1 - active | 0 - not active);

       • keywords – keywords formed from listing details for each listing;

       • featured – shows whether listings are featured or not (1 - featured | 0 - not featured);

       • views – shows the number of listing views;

       • pictures – number of pictures for each listing;

       • activation_date – shows the activation date of each listing;

       • expiration_date – shows the expiration date of each listing.