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To convert weak entities to relations in a database schema, you first need to identify the weak entity's identifying relationship with its owner entity. This involves including a foreign key in the weak entity that references the primary key of the owner entity. Additionally, the weak entity should have its own primary key, typically created by combining its partial key with the primary key of the owner entity. Finally, this new relation can be established in the relational schema, ensuring that the weak entity can now be uniquely identified.
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What is strong entities vs weak entities?
The table that has primary key is strong entity and the table that has no primary key is weak entity
What is partial key?
Specifies a key that that is only partially unique. Used for weak entities.
What is the difference between international relations international affairs and international studies?
Most simplistic way to distinguish two first issues: International relations are relations between various entities in international arena .It could be relations between states, relations between different organizations (regional, world wide, tc). International affairs are issues/topics/problems of concern of various entities (states,organizations,etc).
What is the difference between a regular and a weak and a regular entity?
A regular entity, also known as a strong entity, has a primary key that uniquely identifies each instance and can exist independently of other entities. In contrast, a weak entity does not have a sufficient primary key and relies on a "strong" or "regular" entity for its identification; it is dependent on the strong entity for its existence and typically has a partial key. Weak entities are often used to represent a relationship that requires more context, while regular entities stand alone as distinct objects in a database.
What is the difference between intergovernmental and intragovernmental relations?
Intergovernmental refers to relations between different governments, such as separate countries. Intragovernmental defines relations between separate government entities - within the same overall government structure (for example different counties within one state).
Is it possible to convert real beings into virtual entities?
In Code Lyoko yes but as far as today's reality, sadly no.
Explain the difference between a weak and a strong entity set?
An entity set that does not possess sufficient attributes to form a primary key is called a weak entity set. One that does have a primary key is called a strong entity set. The discriminator (or partial key) of a weak entity set is the set of attributes that distinguishes among all the entities of a weak entity set The existence of a weak entity set depends on the existence of a identifying entity set. It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak entity set We depict a weak entity set by double rectangles in E-R diagram. We underline the discriminator of a weak entity set with a dashed line in E-R diagram.
How do you convert 2.5mEq to mOsm?
It's depend on what elementary entities you want to know (eg, atoms, ions, molecules). Paulo Rubens
Explain whether the Confederation government was strong or weak in the area of trade relations?
It left the central government weak because the states maintained a majority of the power.
What are three issues or problems that face your country?
US: Illegal Immigration, Overwhelming Debt, Weak and Unsustainable Foreign Relations
Describe the puritan missionary efforts to convert native Americans to Christianity?
weak and mostly unsuccessful
Why did the relations between Mexican government and American settlers in Texas begin to deteriorate?
Relations between the Mexican government and American settlers in Texas begin to deteriorate because settlers refused to convert to Catholicism or free their slaves.
