(Helpl) what type of ER Diagram Notation this.

[Maginaku]

Guys. Baka alam nyo po ito nalilito po talaga ako may sagot napo ako. Hindi kopo alam kung tama. Eto po kaunting sagot lang. Sana ma help nyo po ako.

Eto po yung sagot ko sa iba.
*airport_code - parial key attribute -Flight_leg - weak entity
-*Reservation - identifying weak relationship
*Code - Derived attribute

Sana po ma help nyoko. Salamat po.

 

[laxus456]

 

[laxus456]

Ito sir baka makatulong

 

[Maginaku]

Salamat po.. Kaya lang yung iba po wala jan e. Alam nyo papoba yung iba? Salamat po uli

 

[laxus456]

 

[Maginaku]

Salamat po. Medyo gets kopp ito. Kaya lang yung iba talaga hindi ko alam. Liyong liyo napp ako kakahanap sa internet. Maraming salamat po. Na appreciated kopo pag tulong nyo. God bless po.

 

[Maginaku]

Up

 

[Maginaku]

Update po sa sagot ko. Sana may mag help. Salamat po.

*Identify what type of ER Diagram Notation:
-airport_code - primary key attribute -Flight_leg - weak entity
-Reservation - identifying weak relationship
-Code - Derived attribute
-Airplane_type - (strong) entity

 

[vhin le]

Date - Single Value
Airport_code - PK
Reservation - Weak relationship
Flight_leg - Weak Entity
Dep_time - Relationship Attribute
Can_lend - relationship
Airplane_type - Entity
Company - Attribute
Code - PK attribute
Fares - Weak relationship

 

[Maginaku]

Date - Single Value
Airport_code - PK
Reservation - Weak relationship
Flight_leg - Weak Entity
Dep_time - Relationship Attribute
Can_lend - relationship
Airplane_type - Entity
Company - Attribute
Code - PK attribute
Fares - Weak relationship

Salamat po paps. Sapag pansin. Kaya lang po eto po yung pamimilian na sagot.

 

[Maginaku]

Yung sa company po? Composite attribute or derived attribute? Gets kona po yung iba. Salamat po.

 

[Maginaku]

Tyaka po yung airport_code tyaka yung code alin po sa dalawa yung primary key at partial key?

Tyaka po yung fares at reservation parehas po sila weak relationship. E isang beses lang po pede maulit yung sagot
Salamat po.

 

[Maginaku]

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