Strong Types for Relational Data Stored in Databases or
... precise type, for instance, to the join operator when joining on keys. Joins that are ill-formed with respect to key information can then be rejected statically. However, further well-formedness criteria might be in vigor for a particular database that are not captured by the meta-data provided in ...
... precise type, for instance, to the join operator when joining on keys. Joins that are ill-formed with respect to key information can then be rejected statically. However, further well-formedness criteria might be in vigor for a particular database that are not captured by the meta-data provided in ...
2_Managing external data_2
... Data Models • A data model is a collection of concepts for describing data. • A database schema is a description of a particular collection of data, using a given data model. • The relational model of data is the most widely used model today. – Main concept: relation, basically a table with rows an ...
... Data Models • A data model is a collection of concepts for describing data. • A database schema is a description of a particular collection of data, using a given data model. • The relational model of data is the most widely used model today. – Main concept: relation, basically a table with rows an ...
sqlserver_presentation
... collected into bytes. Bit columns cannot be NULL and cannot have indexes on them. SQL_VARIANT : It is used to store values of various SQL Server supported data types, except text,ntext,timestamp, and sql_variant. The maximum length of sql_variant datatype is 8016 bytes. Store in one column of type s ...
... collected into bytes. Bit columns cannot be NULL and cannot have indexes on them. SQL_VARIANT : It is used to store values of various SQL Server supported data types, except text,ntext,timestamp, and sql_variant. The maximum length of sql_variant datatype is 8016 bytes. Store in one column of type s ...
Chapter 21:Application Development and Administration
... single set-oriented query Set orientation -> fewer calls to database E.g. tune program that computes total salary for each department using a separate SQL query by instead using a single query that computes total salaries for all department at once (using group by) Use stored procedures: avoid ...
... single set-oriented query Set orientation -> fewer calls to database E.g. tune program that computes total salary for each department using a separate SQL query by instead using a single query that computes total salaries for all department at once (using group by) Use stored procedures: avoid ...
Policy-Based Management of SQL Servers and Databases
... A data page can become corrupt when a disk fails, or from a power outage. SQL Server 2008 Enterprise protects the integrity of the data and enables a partner node to automatically attempt to recover from these bad page errors. This attempt at recovery enables SQL Server to recover from the physical ...
... A data page can become corrupt when a disk fails, or from a power outage. SQL Server 2008 Enterprise protects the integrity of the data and enables a partner node to automatically attempt to recover from these bad page errors. This attempt at recovery enables SQL Server to recover from the physical ...
IBM DB2 - MicroStrategy
... DB2 compression, DB2 workload manager, DB2 intra-partition parallelism, and DB2 function library • Extensions to DB2 functionality such as aggregate awareness with physical summary tables ...
... DB2 compression, DB2 workload manager, DB2 intra-partition parallelism, and DB2 function library • Extensions to DB2 functionality such as aggregate awareness with physical summary tables ...
Chapter 6
... test relations to see if they are legal under a given set of functional dependencies. If a relation r is legal under a set F of functional dependencies, we say that r satisfies F. specify constraints on the set of legal relations; we say that F holds on R if all legal relations on R satisfy the ...
... test relations to see if they are legal under a given set of functional dependencies. If a relation r is legal under a set F of functional dependencies, we say that r satisfies F. specify constraints on the set of legal relations; we say that F holds on R if all legal relations on R satisfy the ...
ORACLE: PL/SQL What is PL/SQL
... Rollback is the action of setting a data item to its previous value. For instance, assume an account holds $50, if a deposit of $1000 on this account is not completed the balance is set back to $50. Undo is similar to roll-back, the action of resetting a data item to its most recent previous value D ...
... Rollback is the action of setting a data item to its previous value. For instance, assume an account holds $50, if a deposit of $1000 on this account is not completed the balance is set back to $50. Undo is similar to roll-back, the action of resetting a data item to its most recent previous value D ...
Introduction to Structured Query Language
... standard addressed several weaknesses in SQL89 and set forth conceptual SQL features which at that time exceeded the capabilities of any existing RDBMS implementation. The SQL92 standard was approximately six times the length of its predecessor. Because of this disparity, the authors defined three l ...
... standard addressed several weaknesses in SQL89 and set forth conceptual SQL features which at that time exceeded the capabilities of any existing RDBMS implementation. The SQL92 standard was approximately six times the length of its predecessor. Because of this disparity, the authors defined three l ...
Designing Secure Indexes for Encrypted Databases
... to the database objects (e.g., group of cells, rows and columns) needed to perform his job. Encrypting the whole database using the same key, even if access control mechanisms are used, is not enough. For example, an insider who has the encryption key and bypasses the access control mechanism can ac ...
... to the database objects (e.g., group of cells, rows and columns) needed to perform his job. Encrypting the whole database using the same key, even if access control mechanisms are used, is not enough. For example, an insider who has the encryption key and bypasses the access control mechanism can ac ...
Opencsdb: Research on The Application of
... scientific data file formats, such as FITS, DICOM, PDB, PDS, HDF, NetCDF, SDXF format (Day, 2005), as well as scientific metadata formats, such as FGDC, ISO 19115, Darwin Core, MCM, see Scientific Data Formats (2012) (https://nf.apac.edu.au/facilities/software/IDL/docs-6.2/sdf.pdf) are complex and d ...
... scientific data file formats, such as FITS, DICOM, PDB, PDS, HDF, NetCDF, SDXF format (Day, 2005), as well as scientific metadata formats, such as FGDC, ISO 19115, Darwin Core, MCM, see Scientific Data Formats (2012) (https://nf.apac.edu.au/facilities/software/IDL/docs-6.2/sdf.pdf) are complex and d ...
Database Transparencies
... – Users can specify some simple integrity constraints on the data, and the DBMS will enforce these constraints. – Beyond this, the DBMS does not really understand the semantics of the data. (e.g., it does not understand how the interest on a bank account is computed). – Thus, ensuring that a transac ...
... – Users can specify some simple integrity constraints on the data, and the DBMS will enforce these constraints. – Beyond this, the DBMS does not really understand the semantics of the data. (e.g., it does not understand how the interest on a bank account is computed). – Thus, ensuring that a transac ...
Databases
... – Often the same information was stored in multiple master files. – Made it more difficult to effectively integrate data and obtain an organization-wide view of the data. – Also, the same information may not have been consistent between files. • If a student changed his phone number, it may have bee ...
... – Often the same information was stored in multiple master files. – Made it more difficult to effectively integrate data and obtain an organization-wide view of the data. – Also, the same information may not have been consistent between files. • If a student changed his phone number, it may have bee ...
Fujitsu White Paper Picture
... ADO.NET is part of the NET platform from Microsoft and offers access to databases in a similar way to the JDBC interface with Java for this runtime environment. Support for SESAM/SQL is at the development stage. Portable data formats SESAM/SQL offers comprehensive support for data in CSV format (Com ...
... ADO.NET is part of the NET platform from Microsoft and offers access to databases in a similar way to the JDBC interface with Java for this runtime environment. Support for SESAM/SQL is at the development stage. Portable data formats SESAM/SQL offers comprehensive support for data in CSV format (Com ...
Transactional Replication
... data is accommodating schema changes without disrupting replication SQL Server 2005 supports adding, dropping, and altering columns without stopping replication Alter table alter column ( foo int ) ...
... data is accommodating schema changes without disrupting replication SQL Server 2005 supports adding, dropping, and altering columns without stopping replication Alter table alter column ( foo int ) ...
for Intuitive An Data
... kinds of unique identifiers would be needed, one for residences and one for noaddress phones. These identifiers would link the tables. As the number of expandable fields increases, so does the number of tables required to represent them. For that reason, relational database designers tend to shy awa ...
... kinds of unique identifiers would be needed, one for residences and one for noaddress phones. These identifiers would link the tables. As the number of expandable fields increases, so does the number of tables required to represent them. For that reason, relational database designers tend to shy awa ...
EMC INFRASTRUCTURE FOR THE SMART GRID ANALYTICS PLATFORM IN PARTNERSHIP WITH
... high bill prediction, and many others. Along with the benefits however, come the challenges of managing this increase in data streaming into utility company data centers, by some estimates, up to 3,000x more data than is produced by today’s traditional power network. Existing operational databases c ...
... high bill prediction, and many others. Along with the benefits however, come the challenges of managing this increase in data streaming into utility company data centers, by some estimates, up to 3,000x more data than is produced by today’s traditional power network. Existing operational databases c ...
Handout
... Data Dictionary The data dictionary is a set of read-only tables and views that record, verify, and provide information about its associated database. • Describes the database and its objects • Includes two types of objects: ...
... Data Dictionary The data dictionary is a set of read-only tables and views that record, verify, and provide information about its associated database. • Describes the database and its objects • Includes two types of objects: ...
chapter11_rev
... Stored procedures and triggers are important for database application development and database administration Benefits for DBMS management of stored procedures Classification of triggers by granularity, timing, event, and purpose Knowledge of trigger execution procedures ...
... Stored procedures and triggers are important for database application development and database administration Benefits for DBMS management of stored procedures Classification of triggers by granularity, timing, event, and purpose Knowledge of trigger execution procedures ...
ERStudio Data Architect - Embarcadero Technologies Product
... Database Administrators and Database Developers: Managing databases can be incredibly difficult without a blueprint or roadmap to understand important object dependencies. ER/Studio Data Architect's round-trip engineering capabilities including database reverse-engineering provide database administr ...
... Database Administrators and Database Developers: Managing databases can be incredibly difficult without a blueprint or roadmap to understand important object dependencies. ER/Studio Data Architect's round-trip engineering capabilities including database reverse-engineering provide database administr ...
