Judul
... • Keys are used to pick records out of a database • Unique keys make records stand out from each other • If two records had the same key, then you might not pick the correct one – Nonprimary keys are used to sort records in different ways – Foreign keys are fields that appear in two different tables ...
... • Keys are used to pick records out of a database • Unique keys make records stand out from each other • If two records had the same key, then you might not pick the correct one – Nonprimary keys are used to sort records in different ways – Foreign keys are fields that appear in two different tables ...
8. managing data resources - College of Business Administration
... • Using the Web – The browser is a virtual standard and easy to use – The browser does not require training in a database query tool – The use of the browser requires no change to the internal database; this enables firms to provide access to internal databases with little cost thus leveraging their ...
... • Using the Web – The browser is a virtual standard and easy to use – The browser does not require training in a database query tool – The use of the browser requires no change to the internal database; this enables firms to provide access to internal databases with little cost thus leveraging their ...
Object-Based Databases by Jose Reyes Jose
... • Object-relational data model extends the relational data model by providing a richer type system including complex data types and object orientation • Database systems based on the objectrelation model provide a convenient migration path for users of relational databases who wish to use object-ori ...
... • Object-relational data model extends the relational data model by providing a richer type system including complex data types and object orientation • Database systems based on the objectrelation model provide a convenient migration path for users of relational databases who wish to use object-ori ...
Databases Definition - Database It is often said that we live in an
... of anorganisation. It has 2 most important properties: It is integrated and it is shared. Integration allows reduction of data redundancy and facilitates data access since previously distinct data files will have been logically and coherently organised. Sharing allows all potential users in an organ ...
... of anorganisation. It has 2 most important properties: It is integrated and it is shared. Integration allows reduction of data redundancy and facilitates data access since previously distinct data files will have been logically and coherently organised. Sharing allows all potential users in an organ ...
IT 244 Database Management System
... assume data is too big to fit in main memory and must be located primarily on disk at all times ...
... assume data is too big to fit in main memory and must be located primarily on disk at all times ...
M183-2-7688
... created. There are three additional programs in GlobalDBSystem321: GQ_ADO_XtraTables, Documenter, and GBDSTools. The program GQ_ADO_XtraTables builds or rebuilds summary tables for the use of GQuery, which improved performance over an older method of creating these summary tables on the fly. The pro ...
... created. There are three additional programs in GlobalDBSystem321: GQ_ADO_XtraTables, Documenter, and GBDSTools. The program GQ_ADO_XtraTables builds or rebuilds summary tables for the use of GQuery, which improved performance over an older method of creating these summary tables on the fly. The pro ...
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[Powerpoint] - NewSecurityFeatures
... Not all datatypes supported Not intended as a complete protection feature for sensitive data Ad-Hoc queries disclose data. Ex: WHERE Salary > 2000 INSERT…SELECT does not preserve masking Some quirks ...
... Not all datatypes supported Not intended as a complete protection feature for sensitive data Ad-Hoc queries disclose data. Ex: WHERE Salary > 2000 INSERT…SELECT does not preserve masking Some quirks ...
Pro2 Enterprsie & Progress Data Replication Strategies
... : the number of times a root of an equation or zero of a function occurs when there is more than one root or zero
...
... : the number of times a root of an equation or zero of a function occurs when there is more than one root or zero
No Slide Title - Downloads
... – Web-savvy developers can focus on presentation layer • Easier to learn the custom tags than to learn Java ...
... – Web-savvy developers can focus on presentation layer • Easier to learn the custom tags than to learn Java ...
2. Data (horizontal) - NDSU Computer Science
... MUCH WELL-STRUCTURED DATA IS DISCARDED PREMATURELY Databases are about storing data persistently, for later use. ...
... MUCH WELL-STRUCTURED DATA IS DISCARDED PREMATURELY Databases are about storing data persistently, for later use. ...
Database Systems: Design, Implementation, and Management Ninth
... The Entity Relationship Model (cont’d.) Entity instance (or occurrence) is row in table Entity set is collection of like entities Connectivity labels types of relationships Relationships are expressed using Chen notation Relationships are represented by a diamond Relationship name is wr ...
... The Entity Relationship Model (cont’d.) Entity instance (or occurrence) is row in table Entity set is collection of like entities Connectivity labels types of relationships Relationships are expressed using Chen notation Relationships are represented by a diamond Relationship name is wr ...
eXtensible Relational Databases
... Current tools to support data sharing are insufficient. In this paper, a generalization to the relational database model with intrinsic support for metadata is proposed as a framework for constructing a multi-database (or federated database) out of relational data sources. The following theses under ...
... Current tools to support data sharing are insufficient. In this paper, a generalization to the relational database model with intrinsic support for metadata is proposed as a framework for constructing a multi-database (or federated database) out of relational data sources. The following theses under ...
foundations of business intelligence: databases and information
... This diagram shows the relationships between the entities SUPPLIER, PART, LINE_ITEM, and ORDER that might be used to model the database in Figure 6-10. FIGURE 6-11 ...
... This diagram shows the relationships between the entities SUPPLIER, PART, LINE_ITEM, and ORDER that might be used to model the database in Figure 6-10. FIGURE 6-11 ...
Web Enabled EPICS Technologies
... What we did and didn’t want (Requirements) The FSM should use the “corporate” colour scheme and contain a summary of all that an Accelerator Physicist, Operator or Beamline Scientist wants to know at any instant in time We did not want to distribute a video signal around the facility ...
... What we did and didn’t want (Requirements) The FSM should use the “corporate” colour scheme and contain a summary of all that an Accelerator Physicist, Operator or Beamline Scientist wants to know at any instant in time We did not want to distribute a video signal around the facility ...
Analyzing moderately large data sets
... When memory profiling is compiled into R • tracemem(object) reports all copying of object • Rprof(,memory.profling=TRUE) writes information on duplications, large memory allocations, new heap pages at each tick of the time-sampling profiler • Rprofmem() is a pure allocation profiler: it writes a sta ...
... When memory profiling is compiled into R • tracemem(object) reports all copying of object • Rprof(,memory.profling=TRUE) writes information on duplications, large memory allocations, new heap pages at each tick of the time-sampling profiler • Rprofmem() is a pure allocation profiler: it writes a sta ...
Physical Design Physical Database Design (Defined): Process of
... So…how do we go about selecting the DBMS? • Consider potential size of the DB, number of users, type of interfaces. Access is readily available as part of MS office, for example, but it is “Windows only” – there is no “native” MAC version of MS Access. Mac users can sometimes work around this, for e ...
... So…how do we go about selecting the DBMS? • Consider potential size of the DB, number of users, type of interfaces. Access is readily available as part of MS office, for example, but it is “Windows only” – there is no “native” MAC version of MS Access. Mac users can sometimes work around this, for e ...
cmps442_adavanced_database_systems
... A wide range of topics such as query processing and optimization, object-oriented database systems, distributed database systems, database warehousing and data mining will be discussed. The course will also be used to introduce emerging issues related to database systems. Each week lecture meets for ...
... A wide range of topics such as query processing and optimization, object-oriented database systems, distributed database systems, database warehousing and data mining will be discussed. The course will also be used to introduce emerging issues related to database systems. Each week lecture meets for ...
presentation source
... The CD-ROM Approach provide wide distribution range, simple data structure, and it is fast to use, but it doesn’t provide the query ability and may not be the most updated. The Internet provided the widest distribution range and multi-format distribution, but it relies on the traffic of the Network. ...
... The CD-ROM Approach provide wide distribution range, simple data structure, and it is fast to use, but it doesn’t provide the query ability and may not be the most updated. The Internet provided the widest distribution range and multi-format distribution, but it relies on the traffic of the Network. ...
Database Testing
... • A view can bring multiple data from many tables • For all query purposes, a view is treated as a table • Create View SalesPeople As Select employeename from employees where designation like ‘%SALES%’ • When we create views, our job to write complex queries get reduced Softsmith Infotech ...
... • A view can bring multiple data from many tables • For all query purposes, a view is treated as a table • Create View SalesPeople As Select employeename from employees where designation like ‘%SALES%’ • When we create views, our job to write complex queries get reduced Softsmith Infotech ...
Normalizing Database Files
... Click in Object Explorer window, then click Refresh icon and expand Tables node for this database to see the new table May need to right-click Tables>Refresh for the database used to see table that was just created ...
... Click in Object Explorer window, then click Refresh icon and expand Tables node for this database to see the new table May need to right-click Tables>Refresh for the database used to see table that was just created ...
Data Warehousing, Multi-Dimensional Data Models and OLAP
... OLAP tools provide multidimensional analysis functionality such as aggregation, forecasting, ranking, rolling up, drilling down, etc. Though there is no standard definition of OLAP, it can be summarized in five keywords: fast analysis of shared multidimensional information (Pendse, 2003). The critic ...
... OLAP tools provide multidimensional analysis functionality such as aggregation, forecasting, ranking, rolling up, drilling down, etc. Though there is no standard definition of OLAP, it can be summarized in five keywords: fast analysis of shared multidimensional information (Pendse, 2003). The critic ...
