Related Questions

Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
A Weak entity
B Strong entity
C ID-dependent entity
D ID- independent entity
When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?
A T
B U
C V
D Z
Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?
A Weak entity
B Strong entity
C ID-dependent entity
D ID-independent entity
Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?
A Supertype entity
B Subtype entity
C Archetype entity
D Instance entity
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.
A True
B False
A strong entity is an entity whose existence depends on some other entity type.
A True
B False
Which of the following are objective database and not a relational database?
A Web SQL Database
B FileSystem API
C IndexedDB
D User data
Six arms negotiators -- M,O,P,R,S and T-- are to be seated at a round table to discuss disarmament. There are exactly six chairs around the table. Each negotiator sits facing the center of the table and is directly opposite a negotiators across the table.The seating arrangement is subject to the following restrictions : T cannot sit next to P;S cannot sit next to M;R must sit next to M. Which of the following is an acceptable sequence of negotiators around the table ?
A M,S,R,T,P,O
B M,S,T,P,R,O
C T,O,P,S,M,R
D T,R,M,P,S,O
Six arms negotiators -- M,O,P,R,S and T-- are to be seated at a round table to discuss disarmament. There are exactly six chairs around the table. Each negotiator sits facing the center of the table and is directly opposite a negotiators across the table.The seating arrangement is subject to the following restrictions : T cannot sit next to P;S cannot sit next to M;R must sit next to M. If T sits directly across the table from O, who must sit on the other side of P?
A M and O
B M and S
C O and R
D O and S
Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity?
A Supertype entity
B Subtype entity
C Archetype entity
D Instance entity

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