Chapter No. 1 "Getting Started with Information Integration"
... the application accesses heterogeneous data (VSAM, IMS, IDMS, ADABAS, DB2, MSSQL, and so on) that can even be in a non-relational hierarchical format. Some of the technical problems include: ...
... the application accesses heterogeneous data (VSAM, IMS, IDMS, ADABAS, DB2, MSSQL, and so on) that can even be in a non-relational hierarchical format. Some of the technical problems include: ...
A Coding History for Clinical Data
... The coding history system consists of two macros. One is used to set up and maintain a permanent SAS data set and one to display it. In Covance’s data review system, the fields for the coded terms are added to the raw data when the data is brought over from the relational database into the SAS envir ...
... The coding history system consists of two macros. One is used to set up and maintain a permanent SAS data set and one to display it. In Covance’s data review system, the fields for the coded terms are added to the raw data when the data is brought over from the relational database into the SAS envir ...
Provenance Management in Databases Under Schema
... database is stored as relational databases, and thus suitable for any commercial RDBMS. The AM&PM consists of two main components: the provenance database manager and the query parser. Provenance database is a combined database of schema evolution tables and data provenance tables. Schema evolution ...
... database is stored as relational databases, and thus suitable for any commercial RDBMS. The AM&PM consists of two main components: the provenance database manager and the query parser. Provenance database is a combined database of schema evolution tables and data provenance tables. Schema evolution ...
Towards Keyword-Driven Analytical Processing
... the user to explore detailed level aggregation in DS’. In real world databases, the number of dimensions may be large. And each dimension may have many attributes. ...
... the user to explore detailed level aggregation in DS’. In real world databases, the number of dimensions may be large. And each dimension may have many attributes. ...
SAP R/3`s ability to support a number of different databases
... the rules of the data dictionary, SAP’s ENQ or locking mechanism, and SAP’s integrity rules. Some users may bemoan the loss of tools, but the risks and dynamic nature of the data structure make the enforcement of this rule necessary. Some read-only access is possible, but there are a lot of complica ...
... the rules of the data dictionary, SAP’s ENQ or locking mechanism, and SAP’s integrity rules. Some users may bemoan the loss of tools, but the risks and dynamic nature of the data structure make the enforcement of this rule necessary. Some read-only access is possible, but there are a lot of complica ...
Chapter 10.doc
... 2. Two different people may need the same information presented in a different manner. 3. It always is easy to place a value on information. 4. Each higher level of data consists of one or more items from the lower level. 5. The data in a key field is common to all records. 6. Databases require less ...
... 2. Two different people may need the same information presented in a different manner. 3. It always is easy to place a value on information. 4. Each higher level of data consists of one or more items from the lower level. 5. The data in a key field is common to all records. 6. Databases require less ...
Digital Evidence for Database Tamper Detection
... A novel relational hash tree [6] can be designed for efficient database processing, and evaluate the performance penalty for integrity guarantees. Such implementation does not require modification of system internals and can therefore easily be applied to any conventional DBMS. Database provenance c ...
... A novel relational hash tree [6] can be designed for efficient database processing, and evaluate the performance penalty for integrity guarantees. Such implementation does not require modification of system internals and can therefore easily be applied to any conventional DBMS. Database provenance c ...
Chapter 2: Project Selection & Management
... Consists of a collection of tables Primary key uniquely identifies each row Foreign keys establish relationships between tables Referential integrity ensures records in different tables are matched properly Example: you cannot enter an order for a customer that does not exist ...
... Consists of a collection of tables Primary key uniquely identifies each row Foreign keys establish relationships between tables Referential integrity ensures records in different tables are matched properly Example: you cannot enter an order for a customer that does not exist ...
Object-Oriented Design Process and Design Axioms
... ◊ Designing classes (their attributes, methods, associations, structures, and protocols) and applying design axioms. If needed, this step is repeated. ◊ Designing the access layer. ◊ Designing the user interface (view layer classes). ◊ Testing user satisfaction and usability, based on the usage and ...
... ◊ Designing classes (their attributes, methods, associations, structures, and protocols) and applying design axioms. If needed, this step is repeated. ◊ Designing the access layer. ◊ Designing the user interface (view layer classes). ◊ Testing user satisfaction and usability, based on the usage and ...
ch23
... Spatial and Geographic Databases Multimedia Databases Mobility and Personal Databases ...
... Spatial and Geographic Databases Multimedia Databases Mobility and Personal Databases ...
DEV351 - Visual Studio: Developing Local and Mobile Data
... client apps and websites requiring advanced SQL Server features ...
... client apps and websites requiring advanced SQL Server features ...
Database System Architectures
... Cached query plans (reused if same query submitted again) All database processes can access shared memory To ensure that no two processes are accessing the same data structure at the same time, databases systems implement mutual exclusion using either l ...
... Cached query plans (reused if same query submitted again) All database processes can access shared memory To ensure that no two processes are accessing the same data structure at the same time, databases systems implement mutual exclusion using either l ...
Database Management System
... The editing of values stored in a column or columns (not modifying the data type of column) Commonly used Data Types of SQL 1. CHAR : Used to store textual data (characters). Text (either single character or string of characters) are to be enclosed within a pair of single quote (') or pair of doub ...
... The editing of values stored in a column or columns (not modifying the data type of column) Commonly used Data Types of SQL 1. CHAR : Used to store textual data (characters). Text (either single character or string of characters) are to be enclosed within a pair of single quote (') or pair of doub ...
multi-tier architecture
... (see arrays or mutable lists, which often need to be copied before returning them if that's not desired). But when used carelessly they may create severe performance problems (as nearly anything – if you need an example from a language that prides itself on speed of execution then look at C's string ...
... (see arrays or mutable lists, which often need to be copied before returning them if that's not desired). But when used carelessly they may create severe performance problems (as nearly anything – if you need an example from a language that prides itself on speed of execution then look at C's string ...
Do you ELT on z? - Midwest Database User Group
... architected model for building population subsystems • Each logical layer performs a specific kind of function and processing is encapsulated to that layer • Logical layers are grouped into physical components and a staging of data occurs between physical components • Each physical component will be ...
... architected model for building population subsystems • Each logical layer performs a specific kind of function and processing is encapsulated to that layer • Logical layers are grouped into physical components and a staging of data occurs between physical components • Each physical component will be ...
SQL Server Performance Methodology with Oracle
... We don’t believe anything a vendors says. Never trust the sales guy. Automates as much as we can. We believe in McBath’s: Oil Argument, Theory of Database Gravity and Theory of Two. We use command line and BCP, not SSIS or DTS. Do you pack the gear to be part of Team McBath? ...
... We don’t believe anything a vendors says. Never trust the sales guy. Automates as much as we can. We believe in McBath’s: Oil Argument, Theory of Database Gravity and Theory of Two. We use command line and BCP, not SSIS or DTS. Do you pack the gear to be part of Team McBath? ...
RubyOnRails-Databases
... foreign key reference. • :dependant => :delete_all will cause child rows to be deleted in a single SQL statement – faster! • However - :delete_all is only appropriate if the child table is only used by the parent table, and has no hooks that it uses to perform any actions on deletion (more on these ...
... foreign key reference. • :dependant => :delete_all will cause child rows to be deleted in a single SQL statement – faster! • However - :delete_all is only appropriate if the child table is only used by the parent table, and has no hooks that it uses to perform any actions on deletion (more on these ...
Full-Text Support in a Database Semantic File System
... • Used existing rank() function as a black-box • rank() counts number of times each word appears in document, and whether search terms are near one another • Optionally, normalize by document length • Other notions of IR rank could easily be substituted ...
... • Used existing rank() function as a black-box • rank() counts number of times each word appears in document, and whether search terms are near one another • Optionally, normalize by document length • Other notions of IR rank could easily be substituted ...
ETL tools - School of Information Technologies
... together. A primary key is a column which is the identifier for a given entity, where a foreign key is a column in another table which refers a primary key. These keys can also be made up from several columns, in which case they are composite keys. In many cases the primary key is an auto generated ...
... together. A primary key is a column which is the identifier for a given entity, where a foreign key is a column in another table which refers a primary key. These keys can also be made up from several columns, in which case they are composite keys. In many cases the primary key is an auto generated ...
FaceKit: A Database Interface Design Toolkit
... the database). The current level and view are both schema. Two views are possible: schema and class/subclass hierarchy. The schema view is the standard graphical view of a database schema, while the hierarchy shows a forest of classesand subclasses.Two levels are also available: schema and data. The ...
... the database). The current level and view are both schema. Two views are possible: schema and class/subclass hierarchy. The schema view is the standard graphical view of a database schema, while the hierarchy shows a forest of classesand subclasses.Two levels are also available: schema and data. The ...
System Performance
... – In Oracle, it is referred to as the Data Dictionary. – In SQL Server it is referred to as the System Catalog. – In DB2 it is referred to as either the DB2 Catalog or System Catalog. – In MySQL, it is referred to as the Information Schema ...
... – In Oracle, it is referred to as the Data Dictionary. – In SQL Server it is referred to as the System Catalog. – In DB2 it is referred to as either the DB2 Catalog or System Catalog. – In MySQL, it is referred to as the Information Schema ...
CREATION OF DATABASE APPLICATIONS Study Support Ing
... systems (RDMS - relational database management systems). RDMS is based on the relational model, which is based on two mathematical disciplines: the set theory and predicate logic. This chapter presents the theoretical foundation of SQL, the relational model and the data lifecycle. The goal is not an ...
... systems (RDMS - relational database management systems). RDMS is based on the relational model, which is based on two mathematical disciplines: the set theory and predicate logic. This chapter presents the theoretical foundation of SQL, the relational model and the data lifecycle. The goal is not an ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.