27 relations: Check constraint, Column (database), Computer file, Data type, Database, Flat file database, Hierarchical database model, IBM Informix, Logical data model, Metadata, Multiset, Oracle Database, Order by, Primary key, Relation (database), Relational database, Relational model, Row (database), Select (SQL), Set (abstract data type), Spreadsheet, SQL, SQLite, Table (information), Tuple, View (SQL), Virtual column.
A check constraint is a type of integrity constraint in SQL which specifies a requirement that must be met by each row in a database table.
In a relational database, a column is a set of data values of a particular simple type, one value for each row of the database.
A computer file is a computer resource for recording data discretely in a computer storage device.
In computer science and computer programming, a data type or simply type is a classification of data which tells the compiler or interpreter how the programmer intends to use the data.
A database is an organized collection of data, stored and accessed electronically.
A flat file database is a database stored as an ordinary unstructured file called a "flat file".
A hierarchical database model is a data model in which the data is organized into a tree-like structure.
IBM Informix is a product family within IBM's Information Management division that is centered on several relational database management system (RDBMS) offerings.
A logical data model or logical schema is a data model of a specific problem domain expressed independently of a particular database management product or storage technology (physical data model) but in terms of data structures such as relational tables and columns, object-oriented classes, or XML tags.
Metadata is "data that provides information about other data".
In mathematics, a multiset (aka bag or mset) is a modification of the concept of a set that, unlike a set, allows for multiple instances for each of its elements.
Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is a multi-model database management system produced and marketed by Oracle Corporation.
An ORDER BY clause in SQL specifies that a SQL SELECT statement returns a result set with the rows being sorted by the values of one or more columns.
In the relational model of databases, a primary key is a specific choice of a minimal set of attributes (columns) that uniquely specify a tuple (row) in a relation (table).
In relational database theory, a relation, as originally defined by E. F. Codd, is a set of tuples (d1, d2,..., dn), where each element dj is a member of Dj, a data domain.
A relational database is a digital database based on the relational model of data, as proposed by E. F. Codd in 1970.
The relational model (RM) for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd, where all data is represented in terms of tuples, grouped into relations.
In the context of a relational database, a row—also called a tuple—represents a single, implicitly structured data item in a table.
The SQL SELECT statement returns a result set of records from one or more tables.
In computer science, a set is an abstract data type that can store unique values, without any particular order.
A spreadsheet is an interactive computer application for organization, analysis and storage of data in tabular form.
SQL (S-Q-L, "sequel"; Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).
SQLite is a relational database management system contained in a C programming library.
A table is an arrangement of data in rows and columns, or possibly in a more complex structure.
In mathematics, a tuple is a finite ordered list (sequence) of elements.
In a database, a view is the result set of a stored query on the data, which the database users can query just as they would in a persistent database collection object.
In relational databases a virtual column is a table column whose value is automatically computed using other columns values, or another deterministic expression.