chap02
... – USER: shows the objects in the current user’s schema – ALL: shows both objects in the current user’s schema and objects that the user has privileges to manipulate – DBA: allows users who are database administrators to view information about all database objects ...
... – USER: shows the objects in the current user’s schema – ALL: shows both objects in the current user’s schema and objects that the user has privileges to manipulate – DBA: allows users who are database administrators to view information about all database objects ...
Lecture 19
... Transparent data encryption (TDE) enables you to encrypt individual table columns or an entire tablespace. ◦ When a user inserts data into an encrypted column, transparent data encryption automatically encrypts the data. ◦ When users select the column, the data is automatically decrypted. ◦ After th ...
... Transparent data encryption (TDE) enables you to encrypt individual table columns or an entire tablespace. ◦ When a user inserts data into an encrypted column, transparent data encryption automatically encrypts the data. ◦ When users select the column, the data is automatically decrypted. ◦ After th ...
CS186: Introduction to Database Systems
... Data integrity & security Data administration Concurrent access, crash recovery Reduced application development time So why not use them always? – Expensive/complicated to set up & maintain – This cost & complexity must be offset by need – General-purpose, not suited for special-purpose tasks (e.g. ...
... Data integrity & security Data administration Concurrent access, crash recovery Reduced application development time So why not use them always? – Expensive/complicated to set up & maintain – This cost & complexity must be offset by need – General-purpose, not suited for special-purpose tasks (e.g. ...
Database Preservation Issues
... • Records are contained, as whole objects, in the database. • The contents of the database contain records. Each record is spread over tables. • The contents of the database is the record. • Database data (as whole objects or spread across tables) accessed or presented in a precise manner in the app ...
... • Records are contained, as whole objects, in the database. • The contents of the database contain records. Each record is spread over tables. • The contents of the database is the record. • Database data (as whole objects or spread across tables) accessed or presented in a precise manner in the app ...
WebEAV:
... contains the following information: entity (patient identification, visit, date/time etc.), attribute (the name/identification of the parameter), and the value of the parameter. Because attributes are not hardcoded as database fields, this design does not require revision as new clinical parameters ...
... contains the following information: entity (patient identification, visit, date/time etc.), attribute (the name/identification of the parameter), and the value of the parameter. Because attributes are not hardcoded as database fields, this design does not require revision as new clinical parameters ...
Introduction to Database
... The relation has a name that is distinct from all other relation names Each cell of the relation contains exactly on atomic value Each attribute has a distinct name The values of an attribute are all from the same domain The order of attributes has no significance Each tuple is distinct; there are n ...
... The relation has a name that is distinct from all other relation names Each cell of the relation contains exactly on atomic value Each attribute has a distinct name The values of an attribute are all from the same domain The order of attributes has no significance Each tuple is distinct; there are n ...
Py4Inf-14-Database
... to a single copy of each bit of data we build a “web” of information that the relational database can read through very quickly - even for very large amounts of data Often when you want some data it comes from a number of tables linked by these foreign keys ...
... to a single copy of each bit of data we build a “web” of information that the relational database can read through very quickly - even for very large amounts of data Often when you want some data it comes from a number of tables linked by these foreign keys ...
IR in P2P, relational data, OpenURL and full
... http. Thus everyone who is connected to a file sharing network run a web server! • However, there usually is a tight limit on how many downloads a server will accept. • Modern servents have the ability to ...
... http. Thus everyone who is connected to a file sharing network run a web server! • However, there usually is a tight limit on how many downloads a server will accept. • Modern servents have the ability to ...
Slide 1
... Extract, transform and load methods ◦ Methods of loading accurate and consistent data into the data warehouse. ◦ Methods of integrating data from disparate sources. ...
... Extract, transform and load methods ◦ Methods of loading accurate and consistent data into the data warehouse. ◦ Methods of integrating data from disparate sources. ...
2943
... (https://plot.ly/javascript/) (Fig. 2). This graphing system creates pre-rendered, static versions of each chart and stores them for display. Once the page is loaded, a user can click on any pre-rendered graph and switch to an interactive display that allows zooming, focusing on a single point or li ...
... (https://plot.ly/javascript/) (Fig. 2). This graphing system creates pre-rendered, static versions of each chart and stores them for display. Once the page is loaded, a user can click on any pre-rendered graph and switch to an interactive display that allows zooming, focusing on a single point or li ...
Routing Overview
... A database represents some aspect of real world called “miniworld” [Elmasri] or “enterprise” [Ramakrishnan] A database can be of any size and of varying complexity. It may be generated and maintained manually or using computers ...
... A database represents some aspect of real world called “miniworld” [Elmasri] or “enterprise” [Ramakrishnan] A database can be of any size and of varying complexity. It may be generated and maintained manually or using computers ...
week 3 normalisation
... “there is, in fact, a very simple elimination procedure which we shall call normalisation. Through decomposition non-simple domains are replaced by domains whose elements are atomic (non-decomposable) values” ...
... “there is, in fact, a very simple elimination procedure which we shall call normalisation. Through decomposition non-simple domains are replaced by domains whose elements are atomic (non-decomposable) values” ...
Client-Server Architecture
... – Refers to immunity of conceptual schema to changes in the internal schema. – Internal schema changes (e.g. using different file organizations, storage structures/devices). – Should not require change to conceptual or external schemas. ...
... – Refers to immunity of conceptual schema to changes in the internal schema. – Internal schema changes (e.g. using different file organizations, storage structures/devices). – Should not require change to conceptual or external schemas. ...
XML with Structural Information Description
... There is no generic syntax to precisely describe all kinds of structures models The size of XML file is often larger than legacy data file Each structure model needs additional implementation effort Schema specification become longer and longer quickly as number of supported model ...
... There is no generic syntax to precisely describe all kinds of structures models The size of XML file is often larger than legacy data file Each structure model needs additional implementation effort Schema specification become longer and longer quickly as number of supported model ...
Database Research
... traditional DBMS information retrieval spatial and temporal DB image retrieval/multimedia DB user-defined functions make facilities scalable Data stream management ...
... traditional DBMS information retrieval spatial and temporal DB image retrieval/multimedia DB user-defined functions make facilities scalable Data stream management ...
BACK - DAV College For Girls, Yamunanagar
... DBMS is the software that interprets and processes user’s request to retrieve information from a database DBMS provides security facilities in a variety of forms, both to prevent unauthorized access and to prevent authorized users from accessing data concurrently without any inconsistency in the da ...
... DBMS is the software that interprets and processes user’s request to retrieve information from a database DBMS provides security facilities in a variety of forms, both to prevent unauthorized access and to prevent authorized users from accessing data concurrently without any inconsistency in the da ...
2515 - Distributed Databases
... Advantages (from June 2011 Q13 mark scheme): • storage is only required at the central location for the centralised database (1) the local indexes stored at each site take up far less memory (1) • queries are processed locally(1) this speeds up searches as only the required data is retrieved from th ...
... Advantages (from June 2011 Q13 mark scheme): • storage is only required at the central location for the centralised database (1) the local indexes stored at each site take up far less memory (1) • queries are processed locally(1) this speeds up searches as only the required data is retrieved from th ...
Topic: The Relational Database Model and Database Development
... Candidate Key The smallest number of attributes required to uniquely identify each row in a table. For example, in an employee table the name, address, and home phone could be a super key, but the employee social-security number would be a candidate key, because it’s minimal. In practice, singleat ...
... Candidate Key The smallest number of attributes required to uniquely identify each row in a table. For example, in an employee table the name, address, and home phone could be a super key, but the employee social-security number would be a candidate key, because it’s minimal. In practice, singleat ...
Document
... The logical operators are used when questions are more specific and require queries with multiple criteria. • When the criteria are in the same row of the query design grid, Access interprets the instructions using the AND operator. This means that the query results will display on the records that ...
... The logical operators are used when questions are more specific and require queries with multiple criteria. • When the criteria are in the same row of the query design grid, Access interprets the instructions using the AND operator. This means that the query results will display on the records that ...