The small oval on a line in an E-R diagram means that the entity is optional.
Correct Answer:
Verified
Q9: The rows in a database are called
Q41: A foreign key is essential in relational
Q55: Columns that belong to a different table
Q56: Facebook developed a nonrelational data store called
Q57: Users are the final judges as to
Q61: A _ is a collection of forms,
Q61: Relational databases represent relationships using _.
A) foreign
Q63: A _ is a request for data
Q64: Which of the following is a valid
Q68: The database administrator of an organization constantly
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents