CIS 338: Using Data Access Objects
... Putting DAO Data in Form add controls (textboxes) to form write code to set property of control to field in database ...
... Putting DAO Data in Form add controls (textboxes) to form write code to set property of control to field in database ...
How data is stored
... Computerised data systems • Computerised data systems – also known as databases – are organised in similar ways to paper-based data systems. • However because computerised data systems can handle data faster and in more flexible ways than paper-based systems, they have begun to replace many paper-b ...
... Computerised data systems • Computerised data systems – also known as databases – are organised in similar ways to paper-based data systems. • However because computerised data systems can handle data faster and in more flexible ways than paper-based systems, they have begun to replace many paper-b ...
lecture01
... A Brief History of DBMS • The earliest databases (1960s) evolved from file systems – File systems • Allow storage of large amounts of data over a long period of time • File systems do not support: – Efficient access of data items whose location in a particular file is not known – Logical structure ...
... A Brief History of DBMS • The earliest databases (1960s) evolved from file systems – File systems • Allow storage of large amounts of data over a long period of time • File systems do not support: – Efficient access of data items whose location in a particular file is not known – Logical structure ...
---- 3356 B.CA (Part. III) EXAMINATION, 2007
... Item (custid, orderid, itemid, itemname, qty, rate amt,) ...
... Item (custid, orderid, itemid, itemname, qty, rate amt,) ...
Databases powerpoint
... Relational Databases • The problems associated with flat files can be solved by moving some of the data out of the main table and accessing it when required • holds data in many tables of records which are linked by relationships. • A relationship is implemented through common fields held in the tw ...
... Relational Databases • The problems associated with flat files can be solved by moving some of the data out of the main table and accessing it when required • holds data in many tables of records which are linked by relationships. • A relationship is implemented through common fields held in the tw ...
Introduction to Visual Studio Team System for
... Need was identified to find missing member of Visual Studio family Eric Rudder decided missing persona should be called “Data Dude” Project focus: Replace“PROD” database with system to hold “one version of the truth” Development began Sept 1, 2005 ...
... Need was identified to find missing member of Visual Studio family Eric Rudder decided missing persona should be called “Data Dude” Project focus: Replace“PROD” database with system to hold “one version of the truth” Development began Sept 1, 2005 ...
Why Databases??
... No means of Preventing Data Entry Errors (checks must be hard-coded in the programs) Security problems Database systems offer solutions to all the above problems ...
... No means of Preventing Data Entry Errors (checks must be hard-coded in the programs) Security problems Database systems offer solutions to all the above problems ...
CRSP SURVIVOR-BIAS-FREE US MUTUAL FUND DATABASE JUNE 2008 QUARTERLY UPDATE X-CUT
... through the end of March 2008 as did the first June cut, but with Holdings, Holdings Company Information, and CRSP Portno Mapping Tables now populated. In addition, funds that were previously withheld from the March 2008 and first June 2008 cuts of the database have been added . Details of these add ...
... through the end of March 2008 as did the first June cut, but with Holdings, Holdings Company Information, and CRSP Portno Mapping Tables now populated. In addition, funds that were previously withheld from the March 2008 and first June 2008 cuts of the database have been added . Details of these add ...
Miami University
... process, clearly indicate the normal form that the considered relation is in, the reason for it, and what you are proposing to do to convert it to equivalent relations that are in a higher normal form. After the conversion, write the new relations in the relational notation, and draw dependency diag ...
... process, clearly indicate the normal form that the considered relation is in, the reason for it, and what you are proposing to do to convert it to equivalent relations that are in a higher normal form. After the conversion, write the new relations in the relational notation, and draw dependency diag ...
File
... • Select Query: it is useful to extract data from hen tables on the basis of criteria specified in a query object. It can also be used to display data from multiple related Tables • Parameter query: it asks the user to provide the criteria for retrieving data at the run time only • Crosstab Query: i ...
... • Select Query: it is useful to extract data from hen tables on the basis of criteria specified in a query object. It can also be used to display data from multiple related Tables • Parameter query: it asks the user to provide the criteria for retrieving data at the run time only • Crosstab Query: i ...
Components of a Database System
... – From more than one relations, generate one relation that satisfies given conditions 1. SQL(Structured Query Language): Data access language (CH 9) 2. QBE(Query By Example): (Figure 2-8) 3. QBF(Query By Form): user types query constraints on a data entry form and press search button ...
... – From more than one relations, generate one relation that satisfies given conditions 1. SQL(Structured Query Language): Data access language (CH 9) 2. QBE(Query By Example): (Figure 2-8) 3. QBF(Query By Form): user types query constraints on a data entry form and press search button ...
database management system
... • A database can simply be defined as a structured set of data • A database management system (DBMS) is a combination of software and data made up of: – Physical database—a collection of files that contain the data – Database engine—software that supports access to and modification of the database c ...
... • A database can simply be defined as a structured set of data • A database management system (DBMS) is a combination of software and data made up of: – Physical database—a collection of files that contain the data – Database engine—software that supports access to and modification of the database c ...
Part 1
... Rows are sets of values for the columns (attribute values) Primary key: a set of columns that uniquely identifies each row Each row must be unique given the primary key (no duplicates) Rows are referenced by the primary key Row order cannot be determined by the user Does not make sense to say “the f ...
... Rows are sets of values for the columns (attribute values) Primary key: a set of columns that uniquely identifies each row Each row must be unique given the primary key (no duplicates) Rows are referenced by the primary key Row order cannot be determined by the user Does not make sense to say “the f ...
Regis University Graduate Program MSCD 600 Database Architecture Name: ________________________
... What does OLTP stand for? a) Over Limit Transaction Processing b) Online Transaction Preparation c) Outer Level Transaction Performance d) Online Transaction Processing ...
... What does OLTP stand for? a) Over Limit Transaction Processing b) Online Transaction Preparation c) Outer Level Transaction Performance d) Online Transaction Processing ...
Introduction to MS Access - San Francisco State University
... – Create a new table: Create/Table Design – Open a table: • Double click the table name ...
... – Create a new table: Create/Table Design – Open a table: • Double click the table name ...
Distributed Database Management System
... Mixed method uses both approaches. Fragments must not violate the following properties: . completeness: each information in a relation must be contained at least in a fragment; . correctness: the entire information must be obtained by summing all fragments. The distributed database design is based o ...
... Mixed method uses both approaches. Fragments must not violate the following properties: . completeness: each information in a relation must be contained at least in a fragment; . correctness: the entire information must be obtained by summing all fragments. The distributed database design is based o ...
Data Access - Tonga Institute of Higher Education
... The SQLConnection and OLEDbConnection objects both use connection strings to connect to a data source Connection String – Provides information needed to connect to a database You do not need to include everything in a connection string. Only include what is needed. ...
... The SQLConnection and OLEDbConnection objects both use connection strings to connect to a data source Connection String – Provides information needed to connect to a database You do not need to include everything in a connection string. Only include what is needed. ...
IT360 12 week Exam Review Sheet 1. PHP
... 1. PHP a. variables, constants, arrays (numerically indexed arrays and associative arrays) b. control statements (if, for, foreach, while, …) c. files d. functions e. objects/classes, inheritance f. Work with MySQL using PHP Connect to a database Query process results close connection g. Ses ...
... 1. PHP a. variables, constants, arrays (numerically indexed arrays and associative arrays) b. control statements (if, for, foreach, while, …) c. files d. functions e. objects/classes, inheritance f. Work with MySQL using PHP Connect to a database Query process results close connection g. Ses ...
Chapter 1 Introduction to Databases
... or files owned by the programs. (See also Section 1.2). Clearly, each program was responsible for only its own data, which could be repeated in other program’s data files. Different programs could be written in different languages, and would not be able to access another program’s files. This would ...
... or files owned by the programs. (See also Section 1.2). Clearly, each program was responsible for only its own data, which could be repeated in other program’s data files. Different programs could be written in different languages, and would not be able to access another program’s files. This would ...
Eric C. Rollins
... mappings, naming conventions, Unicode localization support for multiple languages, CSS style sheets) in generator so they were automatically utilized in all code produced by team members. Extended code generation technology to new level beyond database access tier. Simple declarative XML grammar was ...
... mappings, naming conventions, Unicode localization support for multiple languages, CSS style sheets) in generator so they were automatically utilized in all code produced by team members. Extended code generation technology to new level beyond database access tier. Simple declarative XML grammar was ...