Dynamic generation of database queries in query builders

A non-transitory machine readable medium storing one or more sequences of instructions for causing a system to generate database queries directed to a database server, said database server storing data elements organized according to attributes, wherein execution of said one or more instructions by one or more processors contained in said system causes said system to perform the actions of:

• maintaining configuration data indicating a comparison predicate to be used for each combination of an attribute and a conditional operation;
• receiving from a user a first attribute, a first conditional operation and a first value;
• examining said configuration data to determine a first comparison predicate specified for the combination of said first attribute and said first conditional operation;
• incorporating said first value in said first comparison predicate to construct a second comparison predicate;
• and
• forming a first database query with said second comparison predicate.

A digital processing system comprising:

• a processor;
• a random access memory (RAM);
• a machine readable medium to store one or more instructions, which when retrieved into said RAM and executed by said processor causes said digital processing system to generate database queries directed to a database server, said database server storing data elements organized according to attributes, said digital processing system performing the actions of:
• maintaining configuration data indicating a comparison predicate to be used for each combination of an attribute and a conditional operation;
• receiving from a user a first attribute, a first conditional operation and a first value;
• examining said configuration data to determine a first comparison predicate specified for the combination of said first attribute and said first conditional operation;
• incorporating said first value in said first comparison predicate to construct a second comparison predicate;
• and
• forming a first database query with said second comparison predicate.