Chapter 3
... • For data to be transformed into useful information, it must first be organized in a meaningful way ...
... • For data to be transformed into useful information, it must first be organized in a meaningful way ...
Creating the Data Layer
... The field AddressNo is going to be the primary key for this table and will be used to uniquely identify each record in the table. The first step is to make sure this value is unique. To do this we set it as the identity of the table so that the database will generate this value. Click once in the na ...
... The field AddressNo is going to be the primary key for this table and will be used to uniquely identify each record in the table. The first step is to make sure this value is unique. To do this we set it as the identity of the table so that the database will generate this value. Click once in the na ...
Introduction to the Relational Model and SQL
... Column MGR contains the employee number of the employee’s direct supervisor. • This shows that . it is possible that a foreign key refer to another row in the same table (or even the same row), . the foreign key column and referenced key may have different names (here: MGR and EMPNO). ...
... Column MGR contains the employee number of the employee’s direct supervisor. • This shows that . it is possible that a foreign key refer to another row in the same table (or even the same row), . the foreign key column and referenced key may have different names (here: MGR and EMPNO). ...
Distributed Databases - Computer Science, Stony Brook University
... Optimizing Distributed Queries • Only applications of the first type can access data directly and hence employ query optimization strategies • These are the applications we consider in this chapter ...
... Optimizing Distributed Queries • Only applications of the first type can access data directly and hence employ query optimization strategies • These are the applications we consider in this chapter ...
A Discussion of Some Intuitions of Defeasible Reasoning
... run on third party DBs. Eg. Jena SDB using mysql or postgres ...
... run on third party DBs. Eg. Jena SDB using mysql or postgres ...
Wrangler - TACC User Portal
... When to Choose a NoSQL Option • In most cases a traditional RDBMS will be your best choice (maturity, application support) • If your data/queries don’t match the RDBMS model well (e.g. graph/network data) • If your application depends on a key-value store or another specialized component • If you n ...
... When to Choose a NoSQL Option • In most cases a traditional RDBMS will be your best choice (maturity, application support) • If your data/queries don’t match the RDBMS model well (e.g. graph/network data) • If your application depends on a key-value store or another specialized component • If you n ...
Overview of Database Management - Cheriton School of Computer
... • Charles Bachman’s Integrated Data Store (IDS) • model standardized by Conference On DAta SYstems Languages (CODASYL) • data organized as collections of sets of records • separation of physical data representation from users’ view of data • pointers between records represent relationships • set typ ...
... • Charles Bachman’s Integrated Data Store (IDS) • model standardized by Conference On DAta SYstems Languages (CODASYL) • data organized as collections of sets of records • separation of physical data representation from users’ view of data • pointers between records represent relationships • set typ ...
Security and Control Issues within Relational Databases
... Each user may be identified and authenticated by either the operating system or the database system. For example: – The Administrator can specify an Oracle password for each Oracle user when the account is created, or – In UNIX a user account e.g. DavidO can be Oracle user “OPS$DavidO” and connect w ...
... Each user may be identified and authenticated by either the operating system or the database system. For example: – The Administrator can specify an Oracle password for each Oracle user when the account is created, or – In UNIX a user account e.g. DavidO can be Oracle user “OPS$DavidO” and connect w ...
No Slide Title
... head element. Additional information includes the actual element type. Also includes, namespace prefixes, comments, PIs. ...
... head element. Additional information includes the actual element type. Also includes, namespace prefixes, comments, PIs. ...
Introduction to SQL Server 2000
... a database is any collection of data items (phone books, laundry lists, parchment scrolls . . . whatever). A record is a representation of some physical or conceptual object. Say, for example, that you want to keep track of a business’s customers. You assign a record for each customer. Each record ...
... a database is any collection of data items (phone books, laundry lists, parchment scrolls . . . whatever). A record is a representation of some physical or conceptual object. Say, for example, that you want to keep track of a business’s customers. You assign a record for each customer. Each record ...
Database Administrator
... exciting opportunity for a Database Administrator. Reporting to the Team Lead of Database Administration, the successful candidate will work on a team that provides database administration services for six Ministries within the Natural Resource Sector. This is a challenging position in a dynamic env ...
... exciting opportunity for a Database Administrator. Reporting to the Team Lead of Database Administration, the successful candidate will work on a team that provides database administration services for six Ministries within the Natural Resource Sector. This is a challenging position in a dynamic env ...
Oracle Warehouse Builder - An Overview
... Import Metadata. source Non-Oracle and Flat-files Target Oracle (relational & Dimensional) and Flat-Files Support for Oracle OLAP and Relational Partitioning ...
... Import Metadata. source Non-Oracle and Flat-files Target Oracle (relational & Dimensional) and Flat-Files Support for Oracle OLAP and Relational Partitioning ...
Object persistence design
... It is based on collection of tables, with each table having a primary key – a field(s) whose value is unique for every row of the table. The tables are related to each other by placing the primary key from one table into the related table as a foreign key. Most RDBMS support referential integrity. ...
... It is based on collection of tables, with each table having a primary key – a field(s) whose value is unique for every row of the table. The tables are related to each other by placing the primary key from one table into the related table as a foreign key. Most RDBMS support referential integrity. ...
A Closer Look
... obtained, not how it is to be achieved (e.g., how to access data, the order of operations) • Due to declarativity of SQL, DBMS determines evaluation strategy – This greatly simplifies application programs – But DBMS is not infallible: programmers should have an idea of strategies used by DBMS so the ...
... obtained, not how it is to be achieved (e.g., how to access data, the order of operations) • Due to declarativity of SQL, DBMS determines evaluation strategy – This greatly simplifies application programs – But DBMS is not infallible: programmers should have an idea of strategies used by DBMS so the ...
What`s New in Microsoft SQL Server 2012 for Administrators
... 70-467: Designing Business Intelligence Solutions with Microsoft SQL Server 2012 70-466: Implementing Data Models & Reports with Microsoft SQL Server 2012 70-463: Implementing Data Warehouses with Microsoft SQL Server 2012 40-462: Administering a Microsoft SQL Server 2012 Database 70-461: Querying M ...
... 70-467: Designing Business Intelligence Solutions with Microsoft SQL Server 2012 70-466: Implementing Data Models & Reports with Microsoft SQL Server 2012 70-463: Implementing Data Warehouses with Microsoft SQL Server 2012 40-462: Administering a Microsoft SQL Server 2012 Database 70-461: Querying M ...
Databases
... e.g., the database consists of information about a set of customers and accounts and the relationship between them) Physical schema: database design at the physical level Logical schema: database design at the logical level Instance – the actual content of the database at a particular point ...
... e.g., the database consists of information about a set of customers and accounts and the relationship between them) Physical schema: database design at the physical level Logical schema: database design at the logical level Instance – the actual content of the database at a particular point ...
DYNAMIC SQL CODEBUILDER
... Because relational databases are based on relational algebra and since here is the access to these databases via SQL, then briefly describes the main terms used: Relation. It is an entity called table. Tuple.It´s a record or row. Compatible union.It refers to the compatibility between two relations, ...
... Because relational databases are based on relational algebra and since here is the access to these databases via SQL, then briefly describes the main terms used: Relation. It is an entity called table. Tuple.It´s a record or row. Compatible union.It refers to the compatibility between two relations, ...
Using NoSQL Database to Persist Complex Data Objects
... cases, RDBMS are sufficient for applictaions needs. But they present poor performance on applications which store large amount of complex data. Such problems are evidenced on some situations as indexing large number of documents and information, retrieving self-associated complex objects, and stream ...
... cases, RDBMS are sufficient for applictaions needs. But they present poor performance on applications which store large amount of complex data. Such problems are evidenced on some situations as indexing large number of documents and information, retrieving self-associated complex objects, and stream ...
(H4) Database Development IMIS HIGHER DIPLOMA QUALIFICATIONS
... DBMS tuning is server side. Managing the processes in memory using such techniques as caching and space allocation – 4 marks (8 marks) b) Describe the use of the following in improving performance i) Data cache Storage in primary memory set aside to store data requests so that future requests for da ...
... DBMS tuning is server side. Managing the processes in memory using such techniques as caching and space allocation – 4 marks (8 marks) b) Describe the use of the following in improving performance i) Data cache Storage in primary memory set aside to store data requests so that future requests for da ...
Database Technologies
... the root at the top • Limited to storing data in one-to-many relationships – One parent segment to many child segments ...
... the root at the top • Limited to storing data in one-to-many relationships – One parent segment to many child segments ...
Introduction to Database Systems
... – Before a change is made to the database, the corresponding log entry is forced to a safe location. (WAL protocol; OS support for this is often inadequate.) – After a crash, the effects of partially executed transactions are undone using the log. (Thanks to WAL, if log entry wasn’t saved before the ...
... – Before a change is made to the database, the corresponding log entry is forced to a safe location. (WAL protocol; OS support for this is often inadequate.) – After a crash, the effects of partially executed transactions are undone using the log. (Thanks to WAL, if log entry wasn’t saved before the ...