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Likewise, the specific set of indexing options and configuration that are available vary greatly by implementation. The structure and text and other data inside the document are usually referred to as the document's Document databases typically provide for additional The core operations that a document-oriented database supports for documents are similar to other databases, and while the terminology is not perfectly standardized, most practitioners will recognize them as Documents are addressed in the database via a unique Another defining characteristic of a document-oriented database is that, beyond the simple key-to-document lookup that can be used to retrieve a document, the database offers an API or query language that allows the user to retrieve documents based on content (or metadata). In most cases, any sort of document can be stored in any database, and those documents can change in type and form at any time. For deployed applications of the software type, see A document-oriented NoSQL database, or document store, is a computer program designed for storing, retrieving and managing semi-structured, document-oriented information.To the point that document-oriented and key-value systems can often be interchanged in operation.

This allows them to search on those types of data, for instance, all phone numbers containing 555, which would ignore the zip code 55555. Generally, programs using objects have many different types of objects, and those objects often have many optional fields. In order to recreate the original contact, the database engine uses the foreign keys to look for the related items across the group of tables and reconstruct the original data. Elle sera ainsi à même d’offrir un certain nombre de fonctionnalités qui ne peuvent être accessibles avec une base de données … Une base de données NoSQL orienté document stocke et extrait les données sous forme d’une paire clé/valeur, mais la partie valeur est stockée sous forme de document. Pour passer de la représentation clé-valeur à la représentation en document, il s’agit principalement de rendre la base de données consciente de la structure de la valeur qu’elle stocke. Ces solutions reposent également sur le paradigme [clé, valeur], et la valeur, dans ce cas, est un document. These two documents share some structural elements with one another, but each also has unique elements. Les données sont hiérarchisées, à l’image de JSON ou XML. Document databases typically provide some mechanism for updating or editing the content (or other metadata) of a document, either by allowing for replacement of the entire document, or individual structural pieces of the document. It is here that the document store varies most from the key-value store. BD orienté document: MongoDB, Couchbase: BD orienté graphe: OrientDB, Neo4j: Voici les bases de données NoSQL à considérer. Document-oriented databases are one of the main categories of Document-oriented databases are inherently a subclass of the The central concept of a document-oriented database is the notion of a Documents in a document store are roughly equivalent to the programming concept of an object. If one wishes to add a COUNTRY_FLAG to a CONTACT, this field can be added to new documents as they are inserted, this will have no effect on the database or the existing documents already stored. For example, you may want a query that retrieves all the documents with a certain field set to a certain value. Les données sont hiérarchisées, à l’image de JSON ou XML. In a canonical relational database, tables would be created for each of these rows with predefined fields for each bit of data: the CONTACT table might include FIRST_NAME, LAST_NAME and IMAGE columns, while the PHONE_NUMBER table might include COUNTRY_CODE, AREA_CODE, PHONE_NUMBER and TYPE (home, work, etc.).

To aid retrieval of information from the database, document-oriented systems generally allow the administrator to provide In the classic normalized relational model, objects in the database are represented as separate rows of data with no inherent structure beyond that given to them as they are retrieved.

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