0
What else can I help you with?
What is a weak relationship in a database?
Join based on key fields
What occurs when a weak entity does not have a candidate key and its instances are indistinguishable without a relationship with another entity?
When a weak entity lacks a candidate key and its instances cannot be uniquely identified without a relationship to another entity, it relies on that relationship to establish its identity. This typically occurs in a one-to-many relationship where the weak entity’s existence is dependent on the strong entity, which provides the necessary identifying attributes. As a result, the weak entity will often include a foreign key from the related strong entity as part of its primary key. Without this relationship, instances of the weak entity would be indistinguishable and cannot be adequately represented in the database.
Can an identifying relationship of a weak entity type will be of a degree greater than two give example?
Sure thing, honey. An identifying relationship of a weak entity type can definitely have a degree greater than two. For example, let's say we have a weak entity type called "Order Item" that depends on both "Order" and "Product" entities to uniquely identify it. In this case, the identifying relationship would have a degree of two (connecting "Order" and "Product") but the weak entity type itself would have a degree of three. Hope that clears things up for ya!
What is the relationship between a weak electrolyte and a weak acid or base?
The strength of an acid is expressed by its Ka value (acid 'equilibrium' constant) or its derivative pKa value ( pKa=-log10[Ka] )The relation with the strength of the conjugate base, (Kb , pKb values) is as follows:Ka * Kb = 1.0*10-14 at 25oCpKa + pKb = 14.00 at 25oC
What is the relationship between a weak acid and its conjugate base in a chemical reaction?
In a chemical reaction, a weak acid and its conjugate base are related as a pair. When the weak acid donates a proton, it forms its conjugate base. The conjugate base can then accept a proton to reform the weak acid. They exist in equilibrium, with the weak acid and its conjugate base acting as partners in the reaction.
Explain how the relationship between the strengths of an acid and its conjugate base and of a base and its conjugated acid?
If acid is strong then its conjugate base must be weak, if conjugate base is strong it again accept the H+ ions so acid can neither be strong, similarly if base is strong its conjugate acid must be weak.
Which statement always accurately describes acids and bases a the conjugate base of a weak acid is a strong base b the conjugate acid of a weak base is a weak acid c strong acids and st?
b) The conjugate acid of a weak base is a weak acid. When a base accepts a proton to form its conjugate acid, it tends to be a weak acid because it does not easily donate a proton back. This relationship is governed by the principles of acid-base equilibrium.
What does mend fences mean?
It can be literally repairing breaks or weak spots in a fence, or it can be an idiom for repairing a "broken" friendship or other relationship.
What is the relationship between the element xenon and its electronegativity?
Xenon is a noble gas with low electronegativity, meaning it has a weak tendency to attract electrons.
What two conditions must be met before an entity can be classified as a weak entity?
In contrast to the strong or regular entity, a weak entity is one that meets two conditions: 1. The entity is existence-dependent; that is, it cannot exist without the entity with which it has a relationship. 2. The entity has a primary key that is partially or totally derived from the parent entity in the relationship.
How do you know your relationship is still worth it?
Well it depends on how happy you are with that person. Have you observed what exactly has kept your relationship strong or weak? If you are happy with whats keeping your relationship strong, then it should be worthwhile. But this all opinion, it is not meant to be taken too seriously. Hope things work out for you! :)
Is Matthew knight in a relationship?
Firstly, why do you care? Secondly, you shouldn't be bothering the internet with your piss-weak problems. Thirdly who othe hell cares?!
