Lecture 5: Active Databases
... for performing Information Processing 2 Database Triggers in SQL 3 Using Database Triggers for Information Processing within DBMS 4 Restrictions for Database Triggers ...
... for performing Information Processing 2 Database Triggers in SQL 3 Using Database Triggers for Information Processing within DBMS 4 Restrictions for Database Triggers ...
Phase 1 - Personal.psu.edu
... duplicate data needs to be removed from the database. • Every row and column contains exactly one value from the applicable domain. Any erroneous data must be removed from the database. • All columns must not contain any hidden information such as timestamps or object ID’s. In addition there needs t ...
... duplicate data needs to be removed from the database. • Every row and column contains exactly one value from the applicable domain. Any erroneous data must be removed from the database. • All columns must not contain any hidden information such as timestamps or object ID’s. In addition there needs t ...
performance tips for batch jobs
... A global index does NOT match the table partitioning. You partition it in a way different than the table. For example, you can have a different number of partitions or even partition the index using a different key. In most cases, however, a global index is non-partitioned--it is one big segment tha ...
... A global index does NOT match the table partitioning. You partition it in a way different than the table. For example, you can have a different number of partitions or even partition the index using a different key. In most cases, however, a global index is non-partitioned--it is one big segment tha ...
Graph based Multi-Dimensional Design of Data
... reference data that will not change over time. The most useful fact tables contain one or more numerical measures or facts that occur for each record. Star Schema can be used to speed up query performance by denormalizing reference information into a single dimension table. Dimension tables, by cont ...
... reference data that will not change over time. The most useful fact tables contain one or more numerical measures or facts that occur for each record. Star Schema can be used to speed up query performance by denormalizing reference information into a single dimension table. Dimension tables, by cont ...
DEV400 - Microsoft
... However, the price is large ViewState. Your data layer will need to return all of the data and then the DataGrid will filter all the displayed records based on the current page. Use SP to return proper page of data, only, not all data. ...
... However, the price is large ViewState. Your data layer will need to return all of the data and then the DataGrid will filter all the displayed records based on the current page. Use SP to return proper page of data, only, not all data. ...
Discovering Computers 2007
... Huge database system that stores and manages data required to analyze historical and current transactions Quick and efficient way to access large amounts of data Uses multidimensional databases ...
... Huge database system that stores and manages data required to analyze historical and current transactions Quick and efficient way to access large amounts of data Uses multidimensional databases ...
Geographic Databases
... ArcGIS supports the use of multiple formats for storing and managing tabular data. Each of ArcGIS software's primary spatial formats has its own native format. Coverages use INFOformatted tables; shapefiles store their attributes in dBASE (.dbf) format; geodatabases rely on the format of their suppo ...
... ArcGIS supports the use of multiple formats for storing and managing tabular data. Each of ArcGIS software's primary spatial formats has its own native format. Coverages use INFOformatted tables; shapefiles store their attributes in dBASE (.dbf) format; geodatabases rely on the format of their suppo ...
Graph based Multi-Dimensional Design of Data
... reference data that will not change over time. The most useful fact tables contain one or more numerical measures or facts that occur for each record. Star Schema can be used to speed up query performance by denormalizing reference information into a single dimension table. Dimension tables, by cont ...
... reference data that will not change over time. The most useful fact tables contain one or more numerical measures or facts that occur for each record. Star Schema can be used to speed up query performance by denormalizing reference information into a single dimension table. Dimension tables, by cont ...
marked - Kansas State University
... Embedded SQL The SQL standard defines embeddings of SQL in a variety of programming languages such as C, Java, and Cobol. A language to which SQL queries are embedded is referred to as a host language, and the SQL structures permitted in the host language comprise embedded SQL. The basic form ...
... Embedded SQL The SQL standard defines embeddings of SQL in a variety of programming languages such as C, Java, and Cobol. A language to which SQL queries are embedded is referred to as a host language, and the SQL structures permitted in the host language comprise embedded SQL. The basic form ...
Java Database Connectivity
... Java Support for ODBC : JDBC When applications written in Java want to access data sources, they use classes and associated methods provided by Java DBC (JDBC) API. JDBC is specified an an “interface”. An interface in Java can have many “implementations”. So it provides a convenient way to realize ...
... Java Support for ODBC : JDBC When applications written in Java want to access data sources, they use classes and associated methods provided by Java DBC (JDBC) API. JDBC is specified an an “interface”. An interface in Java can have many “implementations”. So it provides a convenient way to realize ...
No Slide Title
... relational table. Recording the semester of enrolment, marks, and the grade for each student along with the relationship places logically related data in one location. ...
... relational table. Recording the semester of enrolment, marks, and the grade for each student along with the relationship places logically related data in one location. ...
Document
... LIKE. Operator LIKE is used for string pattern matching with wildcard characters percent (%) and underscore (_). • A percent character (%) in a pattern indicates that a string matching the pattern can have zero or more characters at the percent character’s location in the pattern. • An underscore (_ ...
... LIKE. Operator LIKE is used for string pattern matching with wildcard characters percent (%) and underscore (_). • A percent character (%) in a pattern indicates that a string matching the pattern can have zero or more characters at the percent character’s location in the pattern. • An underscore (_ ...
Effective Keyword Based Selection of Relational Databases
... measured as a combination of two factors: 1) Proximity factor – Inverse of distance 2) Frequency factor, given a distance d – Number of combinations of exactly d+1 distinct tuples that can be joined in a sequence to get the two keywords in the ...
... measured as a combination of two factors: 1) Proximity factor – Inverse of distance 2) Frequency factor, given a distance d – Number of combinations of exactly d+1 distinct tuples that can be joined in a sequence to get the two keywords in the ...
Fundamentals of Database Systems
... Iterator Variables Iterator variables are defined whenever a collection is referenced in an OQL query Iterator d in the previous example serves as an iterator and ranges over each object in the collection Syntactical options for specifying an iterator: – d in departments – departments d – dep ...
... Iterator Variables Iterator variables are defined whenever a collection is referenced in an OQL query Iterator d in the previous example serves as an iterator and ranges over each object in the collection Syntactical options for specifying an iterator: – d in departments – departments d – dep ...
Relational Database Industry and Technology Trends
... • A single, global, logical (Oracle) instance/cluster tied together with grids and data pump technology • Both data and computing resources will be made available across the network on demand • Data sharing through consolidation ...
... • A single, global, logical (Oracle) instance/cluster tied together with grids and data pump technology • Both data and computing resources will be made available across the network on demand • Data sharing through consolidation ...
Database system concept and Architecture
... in the computer. Usually provided for specialists, not for typical end users. ...
... in the computer. Usually provided for specialists, not for typical end users. ...
Customer table
... of CRM, and her staff use Access to maintain company data such as customer orders and billing, coffee supplier orders and payments, and advertising placements and payments. Barbara has a recently developed database named Restaurant 1 to track the company’s restaurant customers, their orders, and rel ...
... of CRM, and her staff use Access to maintain company data such as customer orders and billing, coffee supplier orders and payments, and advertising placements and payments. Barbara has a recently developed database named Restaurant 1 to track the company’s restaurant customers, their orders, and rel ...
U R NDERGRADUATE EPORT
... At the core of the relational model is the concept of a table (also called a relation) in which all data is stored. Each table is made up of records (horizontal rows also known as tuples) and fields (vertical columns also known as attributes). Different tables are related to each other through key f ...
... At the core of the relational model is the concept of a table (also called a relation) in which all data is stored. Each table is made up of records (horizontal rows also known as tuples) and fields (vertical columns also known as attributes). Different tables are related to each other through key f ...
ENCh01 - Department of Computer Engineering
... structure may evolve as new requirements are defined. Availability of up-to-date information – very important for on-line transaction systems such as airline, hotel, car reservations. Economies of scale: by consolidating data and applications across departments wasteful overlap of resources and ...
... structure may evolve as new requirements are defined. Availability of up-to-date information – very important for on-line transaction systems such as airline, hotel, car reservations. Economies of scale: by consolidating data and applications across departments wasteful overlap of resources and ...
Visual Basic Database Access
... • Define one Adapter for each table. • Create the dataset with multiple tables. • Add a DataGrid control and set the DataSource proeprty to the dataset name and leave the DataMember property blank. ...
... • Define one Adapter for each table. • Create the dataset with multiple tables. • Add a DataGrid control and set the DataSource proeprty to the dataset name and leave the DataMember property blank. ...
Introduction to SAS/ACCESS Software
... descriptors and can specifY a subset of the columns specified in an ACCESS descriptor. They can define different SAS variable names and formats than what is prescribed In the ACCESS descriptor. View descriptors are referenced as if they were a SAS data set and can specify the order which the informa ...
... descriptors and can specifY a subset of the columns specified in an ACCESS descriptor. They can define different SAS variable names and formats than what is prescribed In the ACCESS descriptor. View descriptors are referenced as if they were a SAS data set and can specify the order which the informa ...
1188 Development of InterBase since year 2000
... isolation or (most often) in conjunction with the SQL ORDER BY clause. The WITH TIES clause must be used in conjunction with ORDER BY. The ROWS clause introduces three new InterBase SQL keywords: ROWS, TIES, and PERCENT. ...
... isolation or (most often) in conjunction with the SQL ORDER BY clause. The WITH TIES clause must be used in conjunction with ORDER BY. The ROWS clause introduces three new InterBase SQL keywords: ROWS, TIES, and PERCENT. ...
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.