Примери за използване на Relational model на Английски и техните преводи на Български
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The relational model, first proposed in 1970 by Edgar F.
Rule 4: Active online catalog based on the relational model.
A Relational Model of Data for Large Shared Data Banks.
A further note:there are a number of languages for the relational model.
The relational model is used to simplify the database structure.
See navigational database and NoSQL for alternatives to the relational model.
Codd's paper entitled“A Relational Model of Data for Large Shared Data Banks”.
A link represents navigation properties in a data source within a relational model.
Expresses the same queries that another relational model based language describes.
The relational model takes data and separates it into many interrelated tables.
The PowerPivot window is an area where you can work with multiple tables of data andconnect the tables in a relational model.
Codd's paper title A Relational Model of Data for Large Shared Data Banks as a model. .
The three-level database architecture of the concept of data independence which was one of the major driving forces of the relational model.
The relational model employs sets of ledger-style tables, each used for a different type of entity.
IBM itself did one test implementation of the relational model, PRTV, and a production one, Business System 12, both now discontinued.
The relational model is based on the mathematical concept of a relation, which is physically represented as a table.
IBM itself did a single test implementation of the relational model, PRTV, and a production 1, Organization System 12, both now discontinued.
In the relational model, some bit of information was used as a"key", uniquely defining a particular record.
The dominant database language, standardised SQL for the relational model, has influenced database languages for other data models. .
The relational model also allows the content of the database to evolve without constant rewriting of links and pointers.
The three-level database architecture relates to the concept of data independence which was one of the major initial driving forces of the relational model.
While working for IBM, he invented the relational model for database management, the theoretical basis for relational databases.
The three-level database architecture is related to the idea of information independence which was among the significant preliminary driving forces of the relational model.
The most popular example of a database model is the relational model(or the SQL approximation of relational), which uses a table-based format.
In 1970, he wrote a number of papers that outlined a new approach to database construction that eventually culminated in the groundbreaking A Relational Model of Data for Large Shared Data Banks.
While working at IBM he invented the relational model for database management, the theoretical basis for relational databases and relational database management systems.
Later on, the entity-relationship constructs were retrofitted as a data modeling construct for the relational model, and the difference between the two have become irrelevant.
The relational model solved this by splitting the data into a series of normalized tables(or relations), with optional elements being moved out of the main table to where they would take up room only if needed.
The most popular database model for general-purpose databases is the relational model, or more precisely, the relational model as represented by the SQL language.
The relational model minimizes the amount of storage space required, because each piece of data is only stored in one place- a key requirement during when relational databases were created and disk storage was very.