online searching Querying (Computer science) 12 Database searching 10 Database design 2 Database management 2 First-order logic 2 Relational databases 2 Search engines 2 Uncertainty (Information theory) 2 Business enterprises 1 Data integrity 1 Data mining 1 Data processing 1 Database security 1 Databases 1 Electronic commerce 1 Information retrieval 1 Internet searching 1 Invisible Web 1 Keyword searching 1 Management 1 Mathematical models 1 Natural language processing (Computer science) 1 Ontologies (Information retrieval) 1 Predicate (Logic) 1 Programming 1 Punched card systems 1 System analysis 1 Workflow 1 information retrieval 1