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What is the difference between flat file and relational databases?
Wiki User
∙ 15y ago
A flat file system usually stores the same type of information over and over again, whereas a relational database does not. A flat file system might store zip-codes and their explanation (location of the zip code) over and over again, each time per record. A relational database stored the explanation for any given zip-code only once, and looks that information up when it needs it. --
Wiki User
∙ 15y ago
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The developer of a relational database refers to a file as?
Attribute
A developer of a relational database refers to a field as a?
In a relational databaseA field is called a column.A record is called a row (of multiple columns).A file is called a table (of multiple rows).
Why is it better to use a relational database instead of a flat file database?
Relational database has many advantages over the flat file database: 1. Avoids data duplication. 2. Avoids inconsistent records. 3. Easier to change data. 4. Easier to change data format. 5. Data can be added and removed easily. 6. Easier to maintain security.
What is the difference between object oriented model and relational database model?
see the link below http://www.freetutes.com/systemanalysis/sa8-comparison-relational-model-oo-model.html Different database models differ in their representation of relationships. In relational model, connections between two relations are represented by foreign key attribute in one relation that reference the primary key of another relation. Individual tuples having same values in foreign and primary key attribute are logically related. They are physically not connected. Relational model uses logical references. In object oriented model, relationships are represented by references via the object identifier (OID). This is in a way similar to foreign keys but internal system identifiers are used rather than user-defined attributes. The Object Oriented model supports complex object structures by using tuple, set, list, and other constructors. It supports the specification of methods and the inheritance mechanism that permits creation of new class definitions from existing ones. In relational model, each base relation is implemented as a separate file. If the does not specify any storage structure, most RDBMS will store the tuples as unordered records in the file. It allows the user to specify dynamically on each file a single primary or clustering index and any number of secondary indexes. It is the responsibility of user to chObject Orientedse the attributes on which the indexes are set up. Some RDBMSs give the user the option of mixing records from several base relations together. It is useful when related records from more than one relation are often accessed together. This clustering of records physically places a record from one relation followed by the related records from another relation. In this way the related records may be retrieved in most efficient way possible. Object Oriented systems provide persistent storage for complex-structured objects. They employ indexing techniques to locate disk pages that store the object. The objects are often stored as byte strings, and the object structure is reconstructed after copying the disk pages that contain the object into system buffers. Relational model has keys, entity integrity, and referential integrity. The constraints supported by Object Oriented systems vary from system to system. The inverse relationship mechanism supported by some Object Oriented systems provides some declarative constraints. There are languages such as SQL, QUEL, and QBE are available for relational systems. These are based on the relational calculus. In Object Oriented systems, the DML is typically incorporated into some programming language, such as C++. Hence, the structures of both stored persistent objects and programminglanguage transient objects are often compatible. Query languages have been developed for Object Oriented databases. Work on a standard Object Oriented model and language is progressing, but no complete detailed standard has emerged as yet.
A saved workbook is referred to as a?
File.
What has the author Carol McCullough-Dieter written?
Carol McCullough-Dieter has written: 'Oracle8i for Dummies' -- subject(s): Oracle (Computer file), Relational databases 'Oracle9i for Dummies' 'Oracle8 developer's guide' -- subject(s): Oracle (Computer file), Relational databases
What has the author Michael R Ault written?
Michael R. Ault has written: 'A practical guide to Oracle database administration' -- subject(s): Oracle (Computer file), Relational databases 'Oracle9i RAC' -- subject(s): Beowulf clusters (Computer systems), Distributed processing, Electronic data processing, Oracle (Computer file), Parallel processing (Electronic computers), Relational databases 'Oracle8 Black Book' -- subject(s): Oracle (Computer file), Relational databases 'UNIX System Administrator's companion' -- subject(s): Operating systems (Computers), UNIX (Computer file) 'Oracle administration and management' -- subject(s): Oracle (Computer file), Relational databases
What are disadvantages of files?
File system data management (or flat-file databases) served as the only method of file storage and retrieval before the advent of database management systems (such as relational databases). While retaining some use, flat-file databases suffer from poor accessibility, data redundancy, lack of standard file access and the inability to organize data.
What are disadvantages of file system?
File system data management (or flat-file databases) served as the only method of file storage and retrieval before the advent of database management systems (such as relational databases). While retaining some use, flat-file databases suffer from poor accessibility, data redundancy, lack of standard file access and the inability to organize data.
What has the author Kevin T Owens written?
Kevin T. Owens has written: 'Building intelligent databases with Oracle PL/SQL, triggers, and stored procedure' -- subject- s -: Oracle - Computer file -, PL/SQL - Computer program language -, Relational databases 'Building intelligent databases with Oracle PL/SQL, triggers, and stored procedures' -- subject- s -: Oracle - Computer file -, PL/SQL - Computer program language -, Relational databases
What is a flat file database?
Flat file databases are also called as relational databases describe any different means to encode a database model. This requires data to be kept in one large table. Big up Philip Proctor
Do keyfields link data together in a database?
Keyfields crosslink related records in different tables of Relational Databases. But in other kinds of databases (e.g. navigational databases, object oriented databases, flat file databases) other different mechanisms are used or the linking of records is not supported.
What has the author Steve Shiflett written?
Steve Shiflett has written: 'Working with Oracle cartridges' -- subject(s): Database design, Oracle (Computer file), Relational databases
What has the author Darl Kuhn written?
Darl Kuhn has written: 'Pro Oracle database 11g administration' -- subject(s): Relational databases, Oracle (Computer file)
What has the author Rajshekhar Sunderraman written?
Rajshekhar Sunderraman has written: 'Oracle8 programming' -- subject(s): Oracle (Computer file), Relational databases 'Oracle 9i Programming'
What has the author Thomas B Cox written?
Thomas B. Cox has written: 'Oracle workgroup server handbook' -- subject(s): Oracle (Computer file), Relational databases
Discuss the main characteristics of the database approach and how it differs from traditional file system?
Databases store electronic representations of data, but traditional file systems generally store paper with data written on it. In a traditional file system a file folder is the the way records are grouped, but in a database records are indexed in many ways, both by "file folder" and by record or data field. With relational database approaches relationships can be established between data in records and new records can be created from crossing files and even databases.
