An Introduction to Oracle SQL Developer Data Modeler
... Viewer is also available for download from OTN. The viewer provides users with the ability to open and view models previously created in the Data Modeler. SQL Developer Data Modeler runs on Windows, Linux and Mac OS X. To install SQL Developer Data Modeler simply unzip the downloaded file. With SQL ...
... Viewer is also available for download from OTN. The viewer provides users with the ability to open and view models previously created in the Data Modeler. SQL Developer Data Modeler runs on Windows, Linux and Mac OS X. To install SQL Developer Data Modeler simply unzip the downloaded file. With SQL ...
Database Management Core
... Database Maintenance and Tuning (operational effectiveness) Database Integrity (referential integrity, triggers) Database Security (database security settings, auditing/logging) Database Backup and Recovery (availability) The minimum requirements set forth in the “general overview and risk a ...
... Database Maintenance and Tuning (operational effectiveness) Database Integrity (referential integrity, triggers) Database Security (database security settings, auditing/logging) Database Backup and Recovery (availability) The minimum requirements set forth in the “general overview and risk a ...
WCFSQLTablePollingBlogdocx
... WCF SQL Polling with BizTalk ........................................................................................................................ 1 Typed Polling with WCF Adapters ................................................................................................................. 2 ...
... WCF SQL Polling with BizTalk ........................................................................................................................ 1 Typed Polling with WCF Adapters ................................................................................................................. 2 ...
Database Administrator Job Description - MIT IST
... As you complete the competency assessment, read all of the proficiency level definitions for a competency (provided in the next section) and select the one that is most characteristic of the demonstrated performance. If more than one definition is descriptive, select the highest level that is typica ...
... As you complete the competency assessment, read all of the proficiency level definitions for a competency (provided in the next section) and select the one that is most characteristic of the demonstrated performance. If more than one definition is descriptive, select the highest level that is typica ...
Hacking the Big 4 – Jan 2013 FG
... Default and Weak Passwords Default accounts are never good • Not only DBMS have own default accounts, but applications install them too Weak passwords can be cracked • Just google “ password cracker” – dozens of
them out there
• Names, places, dictionary words make poor passwords
• R ...
... Default and Weak Passwords Default accounts are never good • Not only DBMS have own default accounts, but applications install them too Weak passwords can be cracked • Just google “
Week2 Database Fundamentals(3)
... Logical Layer • The logical layer provides a structure for the data which is known as the conceptual schema • This structure needs to meet the requirements of the users. This is what we will work on when we design databases. • It makes the data available to any application (or several at once) witho ...
... Logical Layer • The logical layer provides a structure for the data which is known as the conceptual schema • This structure needs to meet the requirements of the users. This is what we will work on when we design databases. • It makes the data available to any application (or several at once) witho ...
LOGICAL DATABASE DESIGN Learning Units
... A collection of relations relevant for an application constitute a relational database Relations are normalized to ensure that: Collection of relations do not unnecessarily hold duplicate data When a data item is modified it is modified in all relations where it appears - no inconsistency is the ...
... A collection of relations relevant for an application constitute a relational database Relations are normalized to ensure that: Collection of relations do not unnecessarily hold duplicate data When a data item is modified it is modified in all relations where it appears - no inconsistency is the ...
Document
... INSERTION : Enter new item with code 3945 and price 30.50 for which no order has been placed. Inserted tuple will have no values(i.e have to be left blank) for order no and order date DELETION: If order no1886 is deleted the fact that item code 4629 costs 20.25 is lost UPDATE: If price of item 4627 ...
... INSERTION : Enter new item with code 3945 and price 30.50 for which no order has been placed. Inserted tuple will have no values(i.e have to be left blank) for order no and order date DELETION: If order no1886 is deleted the fact that item code 4629 costs 20.25 is lost UPDATE: If price of item 4627 ...
Oracle interMedia
... receives 2000+ full text accesses in the 2 years following publication, and a similar number of accesses again via mirrors (e.g. PubMed Central) Cost to the scientific community = $500. So cost per access: $500/(2000*2) = $0.125 Cost per access reduced almost 100-fold! ...
... receives 2000+ full text accesses in the 2 years following publication, and a similar number of accesses again via mirrors (e.g. PubMed Central) Cost to the scientific community = $500. So cost per access: $500/(2000*2) = $0.125 Cost per access reduced almost 100-fold! ...
DBS Development Lifecycle and DB Analysis
... • Create a conceptual data model Independent of any implementation details. ...
... • Create a conceptual data model Independent of any implementation details. ...
Using SAS Views and SQL Views
... and we needed eight character names for fields and tables before Version 7. So, we developed SAS names for the fields, grouped in ways that make analysis easier. We, then, created views with eight character names in DB2 that renamed and regrouped the fields. These views don't take up storage space, ...
... and we needed eight character names for fields and tables before Version 7. So, we developed SAS names for the fields, grouped in ways that make analysis easier. We, then, created views with eight character names in DB2 that renamed and regrouped the fields. These views don't take up storage space, ...
Distributed Data Management Part 1
... Having a (relational) database that is shared by distributed applications in a network opens immediately a possibility to optimize the access to the database, when taking into account which applications at which sites require which data with which frequency. An obviously useful idea is to move the d ...
... Having a (relational) database that is shared by distributed applications in a network opens immediately a possibility to optimize the access to the database, when taking into account which applications at which sites require which data with which frequency. An obviously useful idea is to move the d ...
on HID
... IT is a term that encompasses all forms of technology used to create, store, exchange, and use information in its various forms (business data, voice conversations, still images, motion pictures, multimedia presentations, and other forms, including those not yet conceived). It's a convenient term fo ...
... IT is a term that encompasses all forms of technology used to create, store, exchange, and use information in its various forms (business data, voice conversations, still images, motion pictures, multimedia presentations, and other forms, including those not yet conceived). It's a convenient term fo ...
Chapter 13: Query Processing
... If the smaller relation fits entirely in memory, use that as the inner relation. Reduces cost to br + bs block transfers and 2 seeks In general, it is much better to have the smaller relation as the outer relation The number of block transfers is multiplied by the number of blocks of the inn ...
... If the smaller relation fits entirely in memory, use that as the inner relation. Reduces cost to br + bs block transfers and 2 seeks In general, it is much better to have the smaller relation as the outer relation The number of block transfers is multiplied by the number of blocks of the inn ...
Agent Foundations for Cooperative Information Systems
... For years, information-system personnel managed corporate data that was centralized on mainframes. The data was kept consistent, but eventually the amount of data increased to the point that centralized storage was no longer viable. Also, users wanted a way to share data across applications and want ...
... For years, information-system personnel managed corporate data that was centralized on mainframes. The data was kept consistent, but eventually the amount of data increased to the point that centralized storage was no longer viable. Also, users wanted a way to share data across applications and want ...
Transactions
... DATA CONSISTENCY • Imagine spending several hours making changes to employee data only to find out that someone else was entering information that conflicted with your changes! • To prevent such disruptions or conflicts and to allow multiple users to access the database at the same time, – database ...
... DATA CONSISTENCY • Imagine spending several hours making changes to employee data only to find out that someone else was entering information that conflicted with your changes! • To prevent such disruptions or conflicts and to allow multiple users to access the database at the same time, – database ...
Schema Fragmentation
... Having a (relational) database that is shared by distributed applications in a network opens immediately a possibility to optimize the access to the database, when taking into account which applications at which sites require which data with which frequency. An obviously useful idea is to move the d ...
... Having a (relational) database that is shared by distributed applications in a network opens immediately a possibility to optimize the access to the database, when taking into account which applications at which sites require which data with which frequency. An obviously useful idea is to move the d ...
Language Integrated Query: An introduction
... VS 2008 designer or SQLMetal command Map tables & fields to classes & properties ...
... VS 2008 designer or SQLMetal command Map tables & fields to classes & properties ...
TrendsDBWinFs
... XML/XSD Data Model Use XML syntax, but not semantics No Relationships in XSD Data Model Too many concepts not useful for us and hard to map to CLR and SQL Different set of scalar types ...
... XML/XSD Data Model Use XML syntax, but not semantics No Relationships in XSD Data Model Too many concepts not useful for us and hard to map to CLR and SQL Different set of scalar types ...
Development of SRS.php, a Simple Object Access Protocol
... webpage where precise information about the features of each of them can be accessed. The information contains the database description, the field list for each record, the database loaders, and the target databases that the selected database links in the same system. Record features The records dep ...
... webpage where precise information about the features of each of them can be accessed. The information contains the database description, the field list for each record, the database loaders, and the target databases that the selected database links in the same system. Record features The records dep ...
Impact of SQL Server 2005
... • Extensibility hook into the Query Processor using a well-defined contract • Initialise a group, accumulate a value, merge groups, finish computation, return result ...
... • Extensibility hook into the Query Processor using a well-defined contract • Initialise a group, accumulate a value, merge groups, finish computation, return result ...
108-2007: Super Size It!!! Maximize the Performance of Your ETL
... some options that can influence which join algorithm the SAS SQL optimizer chooses. We also look at some optimizations you can do for multi-way joins and joins involving relational database tables. If you understand the attributes of your tables such as table size, join keys, column cardinality, and ...
... some options that can influence which join algorithm the SAS SQL optimizer chooses. We also look at some optimizations you can do for multi-way joins and joins involving relational database tables. If you understand the attributes of your tables such as table size, join keys, column cardinality, and ...
UKOUG2013- Streams vs GoldenGate12c - Openlab
... A lot of (good) features inherited from Streams Improved scalability - performance better than Streams Easier deployment, data instantiation and administration Availability of in-database monitoring and reporting More data types supported ...
... A lot of (good) features inherited from Streams Improved scalability - performance better than Streams Easier deployment, data instantiation and administration Availability of in-database monitoring and reporting More data types supported ...
Lec. notes
... Design an ER Model for a hospital system, with the following case description. Add other assumptions as needed. The hospital database stores data about patients, their admission and discharge from hospital’s departments and their treatments. For each patient, we know the name, address, sex, social s ...
... Design an ER Model for a hospital system, with the following case description. Add other assumptions as needed. The hospital database stores data about patients, their admission and discharge from hospital’s departments and their treatments. For each patient, we know the name, address, sex, social s ...
revoking object privileges
... THE PUBLIC KEYWORD • An owner of a table can grant access to all users by using the PUBLIC keyword. – The example shown below allows all users on the system to query data from Jason’s d_songs table: GRANT select ON jason_tsang.d_songs TO PUBLIC; ...
... THE PUBLIC KEYWORD • An owner of a table can grant access to all users by using the PUBLIC keyword. – The example shown below allows all users on the system to query data from Jason’s d_songs table: GRANT select ON jason_tsang.d_songs TO PUBLIC; ...
Relational model
The relational model 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. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.