SQL: Creating and Modifying Database Tables
... Language). [note: SQL is pronounced 'Sequel' to rhyme with equal] SQL is clearly the standard when it comes to relational databases. Just about every database server supports it. It includes features for defining the structure of the data (DDL), for modifying data in the database, for specifying sec ...
... Language). [note: SQL is pronounced 'Sequel' to rhyme with equal] SQL is clearly the standard when it comes to relational databases. Just about every database server supports it. It includes features for defining the structure of the data (DDL), for modifying data in the database, for specifying sec ...
Database Management Systems
... •Facilitates disease tracking •Unsolicited advertisements •Immediate access in emergency •Fear inhibits candid disclosure •Cost-effective ID of treatment •Inaccuracies are spread easily •Safer than paper records •Dr./patient confidentiality loss Chapter 12 Information Systems Page 135 ...
... •Facilitates disease tracking •Unsolicited advertisements •Immediate access in emergency •Fear inhibits candid disclosure •Cost-effective ID of treatment •Inaccuracies are spread easily •Safer than paper records •Dr./patient confidentiality loss Chapter 12 Information Systems Page 135 ...
Data Models
... Data in organisations • Organisations always have to store data about things (entities) • Every entity has many attributes associated with it • Key data items may be used very widely across an organisation for a huge range of purposes (often unrelated) by a wide variety of people • Inconsistencies ...
... Data in organisations • Organisations always have to store data about things (entities) • Every entity has many attributes associated with it • Key data items may be used very widely across an organisation for a huge range of purposes (often unrelated) by a wide variety of people • Inconsistencies ...
How to maximize use of MS Access in research studies
... Some database terms and ideas Briefly show you how to start creating your own DB Practical use of Access in your research studies Manage your study 9 Track the progress of your study 9 Merge to MS word and other documents Enter the research data 9 Monitor your core research data 9 Add graph to t ...
... Some database terms and ideas Briefly show you how to start creating your own DB Practical use of Access in your research studies Manage your study 9 Track the progress of your study 9 Merge to MS word and other documents Enter the research data 9 Monitor your core research data 9 Add graph to t ...
No Slide Title
... the applicable index must be updated when data values for the indexed columns change in the end performance may actually be ...
... the applicable index must be updated when data values for the indexed columns change in the end performance may actually be ...
Communicating with the Outside
... number of records transferred is small ODBC performs better when number of records transferred increases. Better job at prefetching. ...
... number of records transferred is small ODBC performs better when number of records transferred increases. Better job at prefetching. ...
Emerging DB Technologies
... modeling, dealing with complex objects design (conceptual, logical, physical) not researched yet storage on standard devices presents problems retrieval opens up many issues performance problem solving efforts are experimental ...
... modeling, dealing with complex objects design (conceptual, logical, physical) not researched yet storage on standard devices presents problems retrieval opens up many issues performance problem solving efforts are experimental ...
SELECT
... o HAVING filters records that work on summarized GROUP BY results. => HAVING requires that a GROUP BY clause is present. o HAVING applies to summarized group records, whereas WHERE applies to individual records. o Only the groups that meet the HAVING criteria will be returned. o WHERE and HAVING can ...
... o HAVING filters records that work on summarized GROUP BY results. => HAVING requires that a GROUP BY clause is present. o HAVING applies to summarized group records, whereas WHERE applies to individual records. o Only the groups that meet the HAVING criteria will be returned. o WHERE and HAVING can ...
Powering the Cloud with Oracle WebLogic
... • Construct and manipulate the Flashback Data Archive – import user-generated history • Restore points: Support for the use of named restore points in AS OF and versions queries has been added. • Total Recall will (in all likelihood) be part of every edition of the database – including SE ...
... • Construct and manipulate the Flashback Data Archive – import user-generated history • Restore points: Support for the use of named restore points in AS OF and versions queries has been added. • Total Recall will (in all likelihood) be part of every edition of the database – including SE ...
Building & Extending Applications with DataBlade Modules
... DataBlade Architecture HDFEOS DataBlade Components HDFEOS DataBlade Benefits User Scenario Summary ...
... DataBlade Architecture HDFEOS DataBlade Components HDFEOS DataBlade Benefits User Scenario Summary ...
PSI-5-SFJ-Pertemuan 9 Data Management
... “collections of data that are so enormous in size, so varied in content, and so fast to accumulate that they are difficult to store and analyze using traditional approaches” The 3 V concepts: • Volume. Data collections can take up petabytes of storage, and are continually growing. • Velocity. Many d ...
... “collections of data that are so enormous in size, so varied in content, and so fast to accumulate that they are difficult to store and analyze using traditional approaches” The 3 V concepts: • Volume. Data collections can take up petabytes of storage, and are continually growing. • Velocity. Many d ...
Introduction to Databases
... constructor and methods. Metadata tables hold definitions of objects. Links between objects are dynamic relationships. Relationships between objects are made during instantiation of object instances by dynamic ...
... constructor and methods. Metadata tables hold definitions of objects. Links between objects are dynamic relationships. Relationships between objects are made during instantiation of object instances by dynamic ...
Presentation
... Based on cardinality estimations Uses top k statistics and dictionary information Includes optimizations for in-list simplification (eliminate redundant predicates) Decides on representation of intermediate results (bitvector vs vector)
Estimation and execution phase interwoven
...
... Based on cardinality estimations Uses top k statistics and dictionary information Includes optimizations for in-list simplification (eliminate redundant predicates) Decides on representation of intermediate results (bitvector vs vector
Data Modeling
... data elements placed in two-dimensional tables, called relations, that are the logical equivalent of files. • Rows represent data entity • Columns represent attributes ...
... data elements placed in two-dimensional tables, called relations, that are the logical equivalent of files. • Rows represent data entity • Columns represent attributes ...
ADBC_plugin.pdf
... through JavaScript and SQL, field values of a PDF form can be saved to a database, data can be added or updated as needed. All of this is possible without the use of a web server or CGI script. These queries and manipulations can take place on a desktop PC/workstation. When combined with the powerfu ...
... through JavaScript and SQL, field values of a PDF form can be saved to a database, data can be added or updated as needed. All of this is possible without the use of a web server or CGI script. These queries and manipulations can take place on a desktop PC/workstation. When combined with the powerfu ...
Public Management: Concepts and Big Questions
... Physical schema describes how data are actually stored on storage unit. Dependent on DBMS, methods of accessing files, types of hardware storage units, etc. Physical independent if a physical schema (model) is changeable without touching its corresponding internal schema (model) ...
... Physical schema describes how data are actually stored on storage unit. Dependent on DBMS, methods of accessing files, types of hardware storage units, etc. Physical independent if a physical schema (model) is changeable without touching its corresponding internal schema (model) ...
Transaction Management Overview
... A transaction might commit after completing all its actions, or it could abort (or be aborted by the DBMS) after executing some actions. A very important property guaranteed by the DBMS for all transactions is that they are atomic. That is, a user can think of a Xact as always executing all its ac ...
... A transaction might commit after completing all its actions, or it could abort (or be aborted by the DBMS) after executing some actions. A very important property guaranteed by the DBMS for all transactions is that they are atomic. That is, a user can think of a Xact as always executing all its ac ...
Data Warehouse Architecture
... Processing done by target database engine (SSIS: Execute T-SQL Statement task instead of Data Flow Transform tasks) Use for big volumes of data Use when source and target databases are the same Use with PDW ELT is better since database engine is more efficient than SSIS Database engine: Tran ...
... Processing done by target database engine (SSIS: Execute T-SQL Statement task instead of Data Flow Transform tasks) Use for big volumes of data Use when source and target databases are the same Use with PDW ELT is better since database engine is more efficient than SSIS Database engine: Tran ...
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