Execute the Database Designer ScriptUsing the 
\i meta-command in vsql, execute the SQL projection script produced by the Database Designer. This scripts creates the projections that make up your Physical Schema.
A physical schema consists of a set of projections used to store data on disk. The projections in the physical schema are based on the objects in the Logical Schema.
A projection is a special case of a materialized view that provides physical storage for data. A projection can contain some or all of the columns of one or more tables. A projection that contains all of the columns of a table is called a superprojection. A projection that joins one or more tables is called a pre-join projection. Most projections are used for ad-hoc query processing and K-safety but it is possible to have query-specific projections.
A superprojection is a projection that contains every column of a table in the Logical Schema. A table can have multiple superprojections with different sort orders.
A materialized view is similar to a standard SQL view with one major exception: the data is actually stored on disk rather than computed each time the view is used in a query. A materialized view, then, must be refreshed whenever the data in the underlying tables is changed. A projection is a special case of a materialized view.
Reads input from the file filename and executes it as though it had been typed on the keyboard.
Note: To see the lines on the screen as they are read, set the variable ECHO to all.
You can add and drop projections after data is loaded. However, be aware that adding a projection begins a refresh operation that copies data into the new projection from other projections. The refresh operation may take some time to complete. You can monitor the refresh operation by examining the log files.
