The table that has primary key is strong entity and the table that has no primary key is weak entity
weak the GDP in billions is $56.83
strong
why do we need weak entity in database when we can make it strong entity?
Strong Weak opportunities threat
To convert a weak entity to a strong entity, you can assign it a primary key that uniquely identifies each instance of the weak entity, rather than relying on the primary key of its associated strong entity. This often involves creating a new attribute or a combination of attributes within the weak entity itself to serve as the primary key. Additionally, you may need to remove the dependency on the strong entity's key, ensuring the weak entity can exist independently. Lastly, update the database schema to reflect these changes.
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.
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.
it is weak and strong because it neutralises acids. So its strong not weak but weak not strong.
10 senses of strong Sense 1: strong (vs. weak) beardown(prenominal)beefed-upbrawny, hefty, muscular, powerful, sinewybullneckedbullockyfortifiedhard, knockout, severeindustrial-strength, weapons-gradeironlikeknock-down(prenominal), powerfulnoticeablereinforced, strengthenedrobuststiffvehementvirilewell-knit, well-set Sense 2: strong intense (vs. mild) Sense 3: potent, strong powerful (vs. powerless) Sense 4: potent (vs. impotent), strong, stiff equipotentmultipotent Sense 5: impregnable, inviolable, secure, strong, unassailable, unattackable invulnerable (vs. vulnerable) Sense 6: solid, strong, substantial sound (vs. unsound) Sense 7: strong irregular (vs. regular) Sense 8: hard, strong alcoholic (vs. nonalcoholic) Sense 9: strong, warm fresh (vs. stale) Sense 10: firm, strong forceful (vs. forceless)
weak is not strong
antonym comes from the greek, anti, meaning opposite, so the opposite of weak is strong.
Screwdrivers can have weak or strong magnetism.
weak because you can eat it
In Pokemon emerald, you could catch rayquaza. you should also catch some weak Pokemon and vs stronger Pokemon. you summon your weak one and swith out to a strong one.
weak and strong,it depends
Weak
Uh... Weak? What is the point in this question?