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Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Chapter 5: Other Relational Languages. Tuple Relational Calculus Domain Relational Calculus Query-by-Example (QBE) Datalog. Tuple Relational Calculus. A nonprocedural query language, where each query is of the form { t | P ( t ) }

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Lecture on Relational Languages

Lecture on Relational Languages. www.AssignmentPoint.com. Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation

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Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation Ordering the Display of Tuples Aggregate Operations Modification of the Database.

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Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation Ordering the Display of Tuples Aggregate Operations Modification of the Database.

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Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation Ordering the Display of Tuples Aggregate Operations Modification of the Database.

814 views • 72 slides

Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation Ordering the Display of Tuples Aggregate Operations Modification of the Database.

729 views • 72 slides

Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation Ordering the Display of Tuples Aggregate Operations Modification of the Database.

724 views • 72 slides

Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation Ordering the Display of Tuples Aggregate Operations Modification of the Database.

725 views • 72 slides

Chapter 5: Other Relational Languages

Chapter 5: Other Relational Languages. Query-by-Example (QBE) Datalog. Query-by-Example (QBE). Basic Structure Queries on One Relation Queries on Several Relations The Condition Box The Result Relation Ordering the Display of Tuples Aggregate Operations Modification of the Database.

725 views • 72 slides

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TBE: Writing Trigger Rules Visually

TBE: Writing Trigger Rules Visually. Wesley W. Chu Dept. of Computer Science UCLA. Introduction. Triggers: A useful feature for push technology (e.g., active DB, sensors). Difficult to understand and compose trigger rules. QBE (Query-By-Example) Visual query interface.

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Chapter 5: Other Relational Languages

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