slides
... WHERE condition1 – which records (i.e., rows) to delete AND condition2 etc – you can combine more than one condition using AND or OR e.g.: DELETE * FROM Products WHERE ProdID=“bongos” ...
... WHERE condition1 – which records (i.e., rows) to delete AND condition2 etc – you can combine more than one condition using AND or OR e.g.: DELETE * FROM Products WHERE ProdID=“bongos” ...
Databases
... units One can still use a single query to retrieve data spread over multiple tables This is achieved thru keys. ...
... units One can still use a single query to retrieve data spread over multiple tables This is achieved thru keys. ...
Lecture Outline 2 - Applied Computer Science
... a database structure for us, we must know what data we need to store and in what form -this work of determining what our database should look like is called database design - it is the ‘up front’ work in using dbms - - a first step in database design is data modelling we look at a business and see w ...
... a database structure for us, we must know what data we need to store and in what form -this work of determining what our database should look like is called database design - it is the ‘up front’ work in using dbms - - a first step in database design is data modelling we look at a business and see w ...
Word - E-Meld
... There was no master plan behind gathering such speech errors, for a number of psycholinguists it seems that writing down speech errors (often with hand-writing) is a kind of hobby. The consequence is that every researcher used his/her own sets of attributes – they overlap only partly. Together with ...
... There was no master plan behind gathering such speech errors, for a number of psycholinguists it seems that writing down speech errors (often with hand-writing) is a kind of hobby. The consequence is that every researcher used his/her own sets of attributes – they overlap only partly. Together with ...
Chapter 6
... One-to-one (1:1) One-to-many or many-to-one (1:*), (*:1) Many-to-many (*:*) Cardinalities provide useful information about the nature of the company being modeled and the business policies that it follows. ...
... One-to-one (1:1) One-to-many or many-to-one (1:*), (*:1) Many-to-many (*:*) Cardinalities provide useful information about the nature of the company being modeled and the business policies that it follows. ...
Detailed Data Modelling
... primary key in another relation in the same database – it may be a composite key – allows user to see records in one relation associated with a record in another elation The referential integrity constraint (relational database theory) specifies that if an attribute value exists in one relation then ...
... primary key in another relation in the same database – it may be a composite key – allows user to see records in one relation associated with a record in another elation The referential integrity constraint (relational database theory) specifies that if an attribute value exists in one relation then ...
Don't Bring a Spreadsheet to a Database Fight: Case for Microsoft Access
... than Excel worksheets. A form can contain data from a table or query, which can be modified via filters and sorting. This permits data that is stored in multiple locations in the database to be displayed together. Forms also have events. Events are the actions of the user and range from when a mouse ...
... than Excel worksheets. A form can contain data from a table or query, which can be modified via filters and sorting. This permits data that is stored in multiple locations in the database to be displayed together. Forms also have events. Events are the actions of the user and range from when a mouse ...
Set 1 - Introduction
... of or susceptible to change system generated, not derived from values or methods allows shared substructures an object can undergo great changes without changing its identity should allow comparisons based on OID in the query language ...
... of or susceptible to change system generated, not derived from values or methods allows shared substructures an object can undergo great changes without changing its identity should allow comparisons based on OID in the query language ...
Introduction to Databases
... "A collection of interrelated data stored together with controlled redundancy, to serve one or more applications in an optimal fashion; the data is stored so that it is independent of the application programs which use it; a common and controlled approach is used in adding new data and in modifying ...
... "A collection of interrelated data stored together with controlled redundancy, to serve one or more applications in an optimal fashion; the data is stored so that it is independent of the application programs which use it; a common and controlled approach is used in adding new data and in modifying ...
Biological Databases
... accessed and analysed the best way possible. For example: HOW would YOU organise all biological sequences so that the biological information is optimally accessible? You need an appropriate database management system (DBMS) ...
... accessed and analysed the best way possible. For example: HOW would YOU organise all biological sequences so that the biological information is optimally accessible? You need an appropriate database management system (DBMS) ...
Parallel Database Systems The Future of High Performance
... • Data skew – The number of tuples vary widely across the partitions. • Execution skew – Due to data skew, more time is spent to execute an operation on partitions that contain larger numbers of tuples. How could these skew problems be minimized? ...
... • Data skew – The number of tuples vary widely across the partitions. • Execution skew – Due to data skew, more time is spent to execute an operation on partitions that contain larger numbers of tuples. How could these skew problems be minimized? ...
Entities and Attributes
... what doesn't. And to design a good database, a large part of it is just to go through the steps. Now, database modeling is not a place to try and express your inner creativity and find wild and crazy innovative new ways of doing things. If you want to get wild and crazy and innovative, fine, but do ...
... what doesn't. And to design a good database, a large part of it is just to go through the steps. Now, database modeling is not a place to try and express your inner creativity and find wild and crazy innovative new ways of doing things. If you want to get wild and crazy and innovative, fine, but do ...
Version 1.2 - Course Module Slide Options
... management using drag-and-drop functions, drop-down menus, or both. A graphic designer, such as Jet SQL, is used in the Microsoft Access application to extract, manipulate, and structure data that resides in a relational database management system (RDBMS). Jet SQL is based largely on the ANSI SQ ...
... management using drag-and-drop functions, drop-down menus, or both. A graphic designer, such as Jet SQL, is used in the Microsoft Access application to extract, manipulate, and structure data that resides in a relational database management system (RDBMS). Jet SQL is based largely on the ANSI SQ ...
Relational database Design
... that rely on a database to adequately store, query, import & export data and support reporting. For such systems the operation of the database is critical hence its design and implementation must be long lasting, flawless and perfectly tailored to meet the requirements of the system. The problem wit ...
... that rely on a database to adequately store, query, import & export data and support reporting. For such systems the operation of the database is critical hence its design and implementation must be long lasting, flawless and perfectly tailored to meet the requirements of the system. The problem wit ...
Week 5
... database tends to be subject oriented and aims to answer questions such as, “What products are selling well?” “At what time of year do certain products sell best?” “In what regions are sales weakest?” In a dimensional data model, the data is represented as either facts or dimensions. A fact is typic ...
... database tends to be subject oriented and aims to answer questions such as, “What products are selling well?” “At what time of year do certain products sell best?” “In what regions are sales weakest?” In a dimensional data model, the data is represented as either facts or dimensions. A fact is typic ...
ADO.NET and Stored Procedures
... -- DataColumn Objects: DataColumn objects represent the columns in the table. Each DataColumn has a data type which specify which type of data column contains. ...
... -- DataColumn Objects: DataColumn objects represent the columns in the table. Each DataColumn has a data type which specify which type of data column contains. ...
Many-to-Many Relationships
... • Use cascade Update and Cascade Delete • Explain how AutoNumber field simplifies entering new records (Autonumber is compatible with long integers) • Create a main and subform based on a query • Create a parameter query • Use aggregate function • Use Get External Data command ...
... • Use cascade Update and Cascade Delete • Explain how AutoNumber field simplifies entering new records (Autonumber is compatible with long integers) • Create a main and subform based on a query • Create a parameter query • Use aggregate function • Use Get External Data command ...
Data Model Operations - KSU Faculty Member websites
... Categories of data models Conceptual (high-level, semantic) data models: Provide concepts that are close to the way many users perceive data. (Also called entity-based or object-based data models.) Physical (low-level, internal) data models: Provide concepts that describe details of how data is ...
... Categories of data models Conceptual (high-level, semantic) data models: Provide concepts that are close to the way many users perceive data. (Also called entity-based or object-based data models.) Physical (low-level, internal) data models: Provide concepts that describe details of how data is ...
Chapter 1: Introduction - CS-People by full name
... Abstract views of the data (e.g., for storing a customer record) Physical level: how a customer record is stored as bytes/words on disk • Mostly hidden from database users/programmers Logical level: describes “types” inside the database type customer = record name : string; street : string; ci ...
... Abstract views of the data (e.g., for storing a customer record) Physical level: how a customer record is stored as bytes/words on disk • Mostly hidden from database users/programmers Logical level: describes “types” inside the database type customer = record name : string; street : string; ci ...
OJB.NET - University of Scranton
... Copied directly from OJB, then modified. Created and worked on by 1 person: Richard Beauchamp An object-to-relational persistence tool for the .NET platform ...
... Copied directly from OJB, then modified. Created and worked on by 1 person: Richard Beauchamp An object-to-relational persistence tool for the .NET platform ...
SistemManajemenMutuKonstruksi
... Can link data elements from various tables Very supportive of ad hoc requests but slower at processing large amounts of data than hierarchical or network models Multi-Dimensional A variation of the relational model Cubes of data and cubes within cubes Popular for online analytical proces ...
... Can link data elements from various tables Very supportive of ad hoc requests but slower at processing large amounts of data than hierarchical or network models Multi-Dimensional A variation of the relational model Cubes of data and cubes within cubes Popular for online analytical proces ...
Data
... This software includes tools to add, modify or delete data from the database, ask questions (or queries) about the data stored in the database and produce reports ...
... This software includes tools to add, modify or delete data from the database, ask questions (or queries) about the data stored in the database and produce reports ...