Database Modeling and Design - Lecture Notes
... 5. Data independence (a relative term) -- avoids reprogramming of applications, allows easier conversion and reorganization * physical data independence—program unaffected by changes in the storage structure or access methods * logical data independence—program unaffected by changes in the schema * ...
... 5. Data independence (a relative term) -- avoids reprogramming of applications, allows easier conversion and reorganization * physical data independence—program unaffected by changes in the storage structure or access methods * logical data independence—program unaffected by changes in the schema * ...
R - METU Computer Engineering
... ProfId of Teaching and looping on the selected professors (computed on previous slide) – Since selection on Semester was not pushed, hash index on ProfId of Teaching can be used – Note: if selection on Semester were pushed, the index on ProfId would have been lost – an advantage of not using a fully ...
... ProfId of Teaching and looping on the selected professors (computed on previous slide) – Since selection on Semester was not pushed, hash index on ProfId of Teaching can be used – Note: if selection on Semester were pushed, the index on ProfId would have been lost – an advantage of not using a fully ...
marked - Kansas State University
... The task of authorization in above cases falls on the application program, with no support from SQL Benefit: fine grained authorizations, such as to individual tuples, can be implemented by the application. Drawback: Authorization must be done in application code, and may be dispersed all over ...
... The task of authorization in above cases falls on the application program, with no support from SQL Benefit: fine grained authorizations, such as to individual tuples, can be implemented by the application. Drawback: Authorization must be done in application code, and may be dispersed all over ...
Chapter 3 Effects of IT on Strategy and Competition
... • You can add, modify, and even delete data in an underlying table as long as one of the following constraints doesn’t prevent the operation: ...
... • You can add, modify, and even delete data in an underlying table as long as one of the following constraints doesn’t prevent the operation: ...
Slide 1
... The columns in a relational database each have a data type, which indicates how the computer should format the data, and which operations it can perform on the data. The way columns are used in database queries depends on their data types. The most common data types are text, numeric, and Boolean. ...
... The columns in a relational database each have a data type, which indicates how the computer should format the data, and which operations it can perform on the data. The way columns are used in database queries depends on their data types. The most common data types are text, numeric, and Boolean. ...
PHP MySQL Database
... UNSIGNED - Used for number types, limits the stored data to positive numbers and zero AUTO INCREMENT - MySQL automatically increases the value of the field by 1 each time a new record is added PRIMARY KEY - Used to uniquely identify the rows in a table. The column with PRIMARY KEY setting is often a ...
... UNSIGNED - Used for number types, limits the stored data to positive numbers and zero AUTO INCREMENT - MySQL automatically increases the value of the field by 1 each time a new record is added PRIMARY KEY - Used to uniquely identify the rows in a table. The column with PRIMARY KEY setting is often a ...
Creating Queries - acs.uwinnipeg.ca
... After choosing your method of creation begin implementing the table design ...
... After choosing your method of creation begin implementing the table design ...
Chapter12 Access databases
... • DataGridView control allows data to be edited directly within the control to update the database • Two event procedures are automatically created in Code Editor window when a table or field object is dragged to the form ...
... • DataGridView control allows data to be edited directly within the control to update the database • Two event procedures are automatically created in Code Editor window when a table or field object is dragged to the form ...
Slide 1: In this demonstration, we are going to discuss Data
... different hard drives (boxes) on the same server for performance reasons, allowing less contentions for reading mdf and writing ldf to the single “box” (Note: Contention means the conflicts over access to a shared resource). Once again, this is the job of the administrator. Slide 5: This is the basi ...
... different hard drives (boxes) on the same server for performance reasons, allowing less contentions for reading mdf and writing ldf to the single “box” (Note: Contention means the conflicts over access to a shared resource). Once again, this is the job of the administrator. Slide 5: This is the basi ...
Knowledge Management Database
... organization. A number of organizations have invested a lot of time and capital in developing knowledge management systems. Lotus Notes from IBM is a widely used framework for these systems. This project intends to design and develop a database that can be used as a knowledge management system for s ...
... organization. A number of organizations have invested a lot of time and capital in developing knowledge management systems. Lotus Notes from IBM is a widely used framework for these systems. This project intends to design and develop a database that can be used as a knowledge management system for s ...
Databases: storing and retrieving information
... attribute is still a column but together they form a unique primary key for each record). •E.g., CourseRegistrations table: Course name, course number, lecture ...
... attribute is still a column but together they form a unique primary key for each record). •E.g., CourseRegistrations table: Course name, course number, lecture ...
Security/controls of Databases
... The hierarchical model database resembles a tree like structure, such as how Microsoft Windows organizes folders and files. In a hierarchical model database, each upward link is nested in order to keep data organized in a particular order on a same level list. ...
... The hierarchical model database resembles a tree like structure, such as how Microsoft Windows organizes folders and files. In a hierarchical model database, each upward link is nested in order to keep data organized in a particular order on a same level list. ...
Database Processing, 12e (Kroenke/Auer)
... purpose by storing data in tables. Each table has rows and columns, similar to a spreadsheet. A database usually has multiple tables in order to keep track of different but related things. For example, we might have a CUSTOMER table to keep track of customers and a PRODUCT table to keep track of the ...
... purpose by storing data in tables. Each table has rows and columns, similar to a spreadsheet. A database usually has multiple tables in order to keep track of different but related things. For example, we might have a CUSTOMER table to keep track of customers and a PRODUCT table to keep track of the ...
Implementation Schedule - Project Management Docs
... For the MaintMax Database Project, the project team and stakeholders have completed their requirements gathering activities. As this is a small to moderately sized project, and will be completed internally with no contract or external support, the list of requirements is very specific ...
... For the MaintMax Database Project, the project team and stakeholders have completed their requirements gathering activities. As this is a small to moderately sized project, and will be completed internally with no contract or external support, the list of requirements is very specific ...
Database Connectivity: JDBC Database Connectivity Basics Case
... • TYPE FORWARD ONLY: the result set is non-scrollable, the cursor can be moved using only the next() and last() methods (no methods that go back can be used) (default). • TYPE SCROLL INSENSITIVE: the result set is scrollable, i.e., the cursor can be moved both forward (next(), last()) and backwards ...
... • TYPE FORWARD ONLY: the result set is non-scrollable, the cursor can be moved using only the next() and last() methods (no methods that go back can be used) (default). • TYPE SCROLL INSENSITIVE: the result set is scrollable, i.e., the cursor can be moved both forward (next(), last()) and backwards ...
Document
... – it is a subtype or category of a common entity – it needs one or more identifying relationships ...
... – it is a subtype or category of a common entity – it needs one or more identifying relationships ...
udf - Personify
... Transaction Volume Samples ♦ It is often helpful to see how much data is being processed within Elite over a given date range – Trust Volume Example – Number and absolute dollar value of transactions by period ...
... Transaction Volume Samples ♦ It is often helpful to see how much data is being processed within Elite over a given date range – Trust Volume Example – Number and absolute dollar value of transactions by period ...
Tables
... Each database has its own system catalog tables/views. These store meta data about the database objects. You can query these tables just like any other tables. Tables with tabid < 100 in “informix”.systables. Reside under the owner name “informix”. Examples: • “informix”.systables • “informix”.sysin ...
... Each database has its own system catalog tables/views. These store meta data about the database objects. You can query these tables just like any other tables. Tables with tabid < 100 in “informix”.systables. Reside under the owner name “informix”. Examples: • “informix”.systables • “informix”.sysin ...
The Relational Data Model
... objects in the relational database. These are the tables. Indexes, user information. Data integrity and security rules. And so on. The catalog itself is made up of tables that can be manipulated as any other table in the system. In most cases they might be kept hidden by the DBMS with the possibilit ...
... objects in the relational database. These are the tables. Indexes, user information. Data integrity and security rules. And so on. The catalog itself is made up of tables that can be manipulated as any other table in the system. In most cases they might be kept hidden by the DBMS with the possibilit ...
Part 21 - Criteria for Relational Databases
... Null values (distinct from the empty character string or a string of blank characters and distinct from zero or any other number) are supported in fully relational database management systems for representing missing information and inapplicable information in a systematic way, independent of data t ...
... Null values (distinct from the empty character string or a string of blank characters and distinct from zero or any other number) are supported in fully relational database management systems for representing missing information and inapplicable information in a systematic way, independent of data t ...
End Sub
... one of the field listings can be an expression involving other fields, followed by a clause of the form “AS header”. If so, a new column will be created whose values are determined by the expression and having the stated header. For instance, ...
... one of the field listings can be an expression involving other fields, followed by a clause of the form “AS header”. If so, a new column will be created whose values are determined by the expression and having the stated header. For instance, ...
No Slide Title
... Lockable resources and lock escalation SQL Server can lock data at various levels, known as lockable resources. The ten levels form a hierarchy based on granularity, which refers to the amount of data the resource encompasses. A resource that encompasses more data than another resource is less ...
... Lockable resources and lock escalation SQL Server can lock data at various levels, known as lockable resources. The ten levels form a hierarchy based on granularity, which refers to the amount of data the resource encompasses. A resource that encompasses more data than another resource is less ...
Unit 2 Part 2 - WordPress.com
... this is an Oracle database module, we can select either one. As we'll see in the next section, this option won't be available for a SQL Server database using ODBC. In general, OWB supports Oracle natively as a target. But in Chapter 4 of the User's Guide, the Warehouse Builder documentation does men ...
... this is an Oracle database module, we can select either one. As we'll see in the next section, this option won't be available for a SQL Server database using ODBC. In general, OWB supports Oracle natively as a target. But in Chapter 4 of the User's Guide, the Warehouse Builder documentation does men ...
Ch10 File
... one of the field listings can be an expression involving other fields, followed by a clause of the form “AS header”. If so, a new column will be created whose values are determined by the expression and having the stated header. For instance, ...
... one of the field listings can be an expression involving other fields, followed by a clause of the form “AS header”. If so, a new column will be created whose values are determined by the expression and having the stated header. For instance, ...
Database Systems – Set Theory
... CRM software packages (solutions) are made to solve business problems. The business problem usually isn't a lack of information;but the inability to take action that is based on that information. There is not one single software package that can force business to take action on the information that ...
... CRM software packages (solutions) are made to solve business problems. The business problem usually isn't a lack of information;but the inability to take action that is based on that information. There is not one single software package that can force business to take action on the information that ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".