DB Design - CS 457/557 : Database Management Systems
... Relational, Object-oriented, object-relational, noSQL – DBMS based on data model • Relational: Access, MySQL (open source) • Object-Relational, Oracle, SQL-Server, DB2, Sybase, PostgreSQL (open source) • Object-oriented: ObjectStore, Versant (VSNT), Objectivity/DB • NoSQL: MongoDB, Couchbase, Neo4j ...
... Relational, Object-oriented, object-relational, noSQL – DBMS based on data model • Relational: Access, MySQL (open source) • Object-Relational, Oracle, SQL-Server, DB2, Sybase, PostgreSQL (open source) • Object-oriented: ObjectStore, Versant (VSNT), Objectivity/DB • NoSQL: MongoDB, Couchbase, Neo4j ...
DB Design - CS 457/557 : Database Management Systems
... – Data models Relational, Object-oriented, object-relational, noSQL – DBMS based on data model • Relational: Access, MySQL (open source) • Object-Relational, Oracle, SQL-Server, DB2, Sybase, PostgreSQL (open source) • Object-oriented: ObjectStore, Versant (VSNT), Objectivity/DB • NoSQL: MongoDB Couc ...
... – Data models Relational, Object-oriented, object-relational, noSQL – DBMS based on data model • Relational: Access, MySQL (open source) • Object-Relational, Oracle, SQL-Server, DB2, Sybase, PostgreSQL (open source) • Object-oriented: ObjectStore, Versant (VSNT), Objectivity/DB • NoSQL: MongoDB Couc ...
1 File Processing Systems
... • sets of entities and sets of relationships between entities are represented as tables • each table has multiple (named) columns • each data item is represented as a fixed format record stored in a row of such a table For example, a table storing customer information could have columns for the cust ...
... • sets of entities and sets of relationships between entities are represented as tables • each table has multiple (named) columns • each data item is represented as a fixed format record stored in a row of such a table For example, a table storing customer information could have columns for the cust ...
Miguel Cordone`s slides (Working with Data), Powerpoint file
... getFile(): return a fully-formed file path as a Titanium.Filesystem.File object read(): return the contents of file as blob write(): write the contents to file deleteFile(): delete the file exists(): return true if the file or directory exists on the device move(): move the file to another path rena ...
... getFile(): return a fully-formed file path as a Titanium.Filesystem.File object read(): return the contents of file as blob write(): write the contents to file deleteFile(): delete the file exists(): return true if the file or directory exists on the device move(): move the file to another path rena ...
Document
... higher level is called Data independence. There are two Levels of data independence: 1.Physical Data Independence: The ability to change the physical schema without changing the logical schema is called physical data independence. For example, a change to the internal schema, such as using differe ...
... higher level is called Data independence. There are two Levels of data independence: 1.Physical Data Independence: The ability to change the physical schema without changing the logical schema is called physical data independence. For example, a change to the internal schema, such as using differe ...
comp4_unit6b_lecture_transcript
... In this topic we will discuss relational databases. Relational databases are the most common type of database in use today. Relational databases use unique keys to connect tables of a database. These connections are called relationships. Databases are designed using something called data modeling. S ...
... In this topic we will discuss relational databases. Relational databases are the most common type of database in use today. Relational databases use unique keys to connect tables of a database. These connections are called relationships. Databases are designed using something called data modeling. S ...
Intelligent Database
... Knowledge representation (KR) – flat DB tables are not compatible with some of the advanced KR techniques used ESs often have fact base developed in an ad-hoc way can result in performance problems that a traditional DB system would not have. Often end up with use of redundant data descriptions in o ...
... Knowledge representation (KR) – flat DB tables are not compatible with some of the advanced KR techniques used ESs often have fact base developed in an ad-hoc way can result in performance problems that a traditional DB system would not have. Often end up with use of redundant data descriptions in o ...
1 Introduction
... keeps an inventory of music in the form of cassette and compact disks in stock. The store also keeps track of customer orders for music that are placed through an employee of the store. The system must be able to Let store employees query the database with regard to music in stock and music on ord ...
... keeps an inventory of music in the form of cassette and compact disks in stock. The store also keeps track of customer orders for music that are placed through an employee of the store. The system must be able to Let store employees query the database with regard to music in stock and music on ord ...
Managing Semi-Structured Data
... • Fully unstructured data—ordinary text • Semi-structured data—the grey area in between – No “good solutions;” no good “software, tools, or methodologies to manipulate [semi-structured data]” – “[Researchers] don’t even agree on the shape of the problem—much less, good approaches to solving it.” ...
... • Fully unstructured data—ordinary text • Semi-structured data—the grey area in between – No “good solutions;” no good “software, tools, or methodologies to manipulate [semi-structured data]” – “[Researchers] don’t even agree on the shape of the problem—much less, good approaches to solving it.” ...
NoDB: Querying Raw Data
... ▪ Follows the format of positional map. Fixed size cache. LRU policy to drop and populate the cache. ▪ A change in a position of an attribute in the data file might call for significant reorganization. Nevertheless, being an auxiliary data structure, the positional map can be dropped and recreated w ...
... ▪ Follows the format of positional map. Fixed size cache. LRU policy to drop and populate the cache. ▪ A change in a position of an attribute in the data file might call for significant reorganization. Nevertheless, being an auxiliary data structure, the positional map can be dropped and recreated w ...
ACCESS 1. In a _____ database such as those maintained by
... a) determine the primary keys b) identify the tables c) determine additional fields d) determine relationships between the tables ...
... a) determine the primary keys b) identify the tables c) determine additional fields d) determine relationships between the tables ...
VIII. Internal/External Contacts
... development using large Relational Database Management Software (RDBMS) with a preference for SQLserver. Translates secondary data into Access, SAS and SQLserver databases. Gathers data from various sources, prepares and processes data for analyses. . Creates and maintains static and intermediate ta ...
... development using large Relational Database Management Software (RDBMS) with a preference for SQLserver. Translates secondary data into Access, SAS and SQLserver databases. Gathers data from various sources, prepares and processes data for analyses. . Creates and maintains static and intermediate ta ...
data definition language - Department of Computer Science
... Three Levels of Architecture • Three level architecture is also called ANSI/SPARC architecture or three schema architecture • This framework is used for describing the structure of specific database systems (small systems may not support all aspects of the architecture) • In this architecture the d ...
... Three Levels of Architecture • Three level architecture is also called ANSI/SPARC architecture or three schema architecture • This framework is used for describing the structure of specific database systems (small systems may not support all aspects of the architecture) • In this architecture the d ...
Lecture 9: Users, ER Diagrams - csns
... Database access code from a Java Web app (CSNS). This uses Hibernate, which helps to map relational DBs to objects ...
... Database access code from a Java Web app (CSNS). This uses Hibernate, which helps to map relational DBs to objects ...
Introduction - CS 457/557 : Database Management Systems
... – Low level (physical) - XML – Implementation (representational) combines conceptual and physical – Relational – NoSQL data models – Column, key-value, document stores ...
... – Low level (physical) - XML – Implementation (representational) combines conceptual and physical – Relational – NoSQL data models – Column, key-value, document stores ...
Learn about databases here
... Data redundancy is the presence of duplicate data in multiple data files. In this situation confusion results because the data can have different meanings in different files. Program-data dependence is the tight relationship between data stored in files and the specific programs required to update a ...
... Data redundancy is the presence of duplicate data in multiple data files. In this situation confusion results because the data can have different meanings in different files. Program-data dependence is the tight relationship between data stored in files and the specific programs required to update a ...
College of Science - George Mason University
... Course objectives: This course is essentially a Research Methods course, in which students learn to model and instantiate, in a relational database management system, a practical database to support their own scientific research; students also learn methods for access, and methods for the retrieval ...
... Course objectives: This course is essentially a Research Methods course, in which students learn to model and instantiate, in a relational database management system, a practical database to support their own scientific research; students also learn methods for access, and methods for the retrieval ...
ALGRES: An Extended Relational Database - CEUR
... We assume that the ALGRES system will be typically applied to complex data structure of medium size, rather than to very large databases: Examples are CAD and engineering systems, and some office automation systems. As a consequence of these assumptions, ALGRES programs operate on main memory data s ...
... We assume that the ALGRES system will be typically applied to complex data structure of medium size, rather than to very large databases: Examples are CAD and engineering systems, and some office automation systems. As a consequence of these assumptions, ALGRES programs operate on main memory data s ...
Document
... • Enterprise solutions (Oracle, IBM DB2, SQL Server) are very expensive – And require professional administration too ...
... • Enterprise solutions (Oracle, IBM DB2, SQL Server) are very expensive – And require professional administration too ...
Lab 2: Data Manipulation Language
... Performing read-only queries of data is sometimes also considered a component of DML. A popular data manipulation language is that of Structured Query Language (SQL), which is used to retrieve and manipulate data in a relational database. Other forms of DML are those used by IMS/DLI, CODASYL databas ...
... Performing read-only queries of data is sometimes also considered a component of DML. A popular data manipulation language is that of Structured Query Language (SQL), which is used to retrieve and manipulate data in a relational database. Other forms of DML are those used by IMS/DLI, CODASYL databas ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.