Question
Which join should be used when you want to list all customers and any orders they may have placed, including customers who haven’t placed any orders?
More IT DBMS Questions
- A PL/SQL `TRIGGER` is a stored program that automatically executes in response to:
- Which of the following database models represents data as a collection of tables, where each table consists of rows and columns?
- In a relational database, what is a foreign key?
- Which type of join returns only matching records from both tables?
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- Which database model represents data in a tree-like structure, where each child record has only one parent?
- ACID properties in DBMS ensure:
- What is referential integrity?
- Which type of SQL JOIN returns all rows from both tables involved, placing NULLs in columns where there is no matching row on the other side?
- Given a relation R(A, B, C, D, E) and functional dependencies {A -> B, BC -> D, D -> E}. Which of the following is a candidate key for R?
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