what are the three types of relationships you can defined between tables?
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There are three specific types of relationships that can exist between a pair of tables: one-to-one, one-to-many, and many-to-many. The tables participate in only one type of relationship at any given time.
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["Targeted Relationships. These are the people you don't know but who are in the same industry as you—either as peers or competitors. ... ", 'Tentative Relationships. ... ', 'Transactional Relationships. ... ', 'Trusted Relationships.']
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There are five types of ecological relationships: competition, predation, commensalism, mutualism and parasitism.
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In UML there are five different types of relationships: association, aggregation, composition, dependency, and inheritance.
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['Represent entities.', 'Represent relationships.', 'Normalize the relations.', 'Merge the relations.']
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['Native N:N Relationship – CRM automatically creates the relationship between two entities.', 'Manual N:N Relationship – A combination of two N:1 relationships that share a common intersect entity.']
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['A data field holds a single fact or attribute of an entity. ... ', 'A record is a collection of related fields. ... ', 'A file is a collection of related records. ... ', 'Files are integrated into a database.']
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There are three different types of symbiotic relationships: mutualism, commensalism, and parasitism. Mutualism: both partners benefit.
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Kinds of table relationships. A relationship works by matching data in key columns, usually columns (or fields) that have the same name in both tables. In most cases, the relationship connects the primary key, or the unique identifier column for each row, from one table to a field in another table.
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Data Models use three types of relationships: one-to-many, many-to-many, and one-to-one. Database designers usually use these notations: 1: M or 1.. *, M:N or “..” or 1:1 or 1..1 respectively. M:N relationships cannot be implemented as such in the relational model, they have to be changed into two 1:M relationships.
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['Hierarchical database model.', 'Relational model.', 'Network model.', 'Object-oriented database model.', 'Entity-relationship model.', 'Document model.', 'Entity-attribute-value model.', 'Star schema.']
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['Hierarchical databases.', 'Network databases.', 'Relational databases.', 'Object-oriented databases.', 'Graph databases.', 'ER model databases.', 'Document databases.', 'NoSQL databases.']
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An XML document contains information about the relationship of data items to each other in the form of the hierarchy. With the relational model, the only types of relationships that can be defined are parent table and dependent table relationships.
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['Super Key. ... ', 'Candidate Key. ... ', 'Primary Key. ... ', 'Alternate key. ... ', 'Composite/Compound Key. ... ', 'Unique Key. ... ', 'Foreign Key.']
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entity relationship (ER) data model: also called an ER schema, are represented by ER diagrams. These are well suited to data modelling for use with databases. ternary relationship: a relationship type that involves many to many relationships between three tables.
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The Relational Database. Organize data into two-dimensional tables (called relations) with columns and rows. One table for each entity: -For ex: (CUSTOMER, SUPPLIER, PART, SALES) Fields (columns) store data representing an attribute.
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The three primary types of interpersonal relationships we engage in are friendships, romantic relationships, and family relationships. Each of these relationships develop through a series of stages of growth and deterioration.