E3_alumni_database
... Assign a proper data type to each field Identify the PK and FK in each table Assign constraints Assign indexes to the fields if necessary (depends on the type of queries, e.g., select, sort by, join Add more field to each table if required Think about cardinality (1:1, 1:M, and M:M) Identify and mod ...
... Assign a proper data type to each field Identify the PK and FK in each table Assign constraints Assign indexes to the fields if necessary (depends on the type of queries, e.g., select, sort by, join Add more field to each table if required Think about cardinality (1:1, 1:M, and M:M) Identify and mod ...
EMS DB Extract - EMS SQL Manager
... statements, define constraints for extracted table data, compress result script files and more. The program scripts database objects in the correct order according to their dependencies, so that the subsequent recovery of objects from created script files also takes place in the right order ...
... statements, define constraints for extracted table data, compress result script files and more. The program scripts database objects in the correct order according to their dependencies, so that the subsequent recovery of objects from created script files also takes place in the right order ...
Slide 1
... Relational data model represents the conceptual and external level schemas as if data are stored in tables. Table Each row, a tuple, contains data about one instance of an entity. This is equivalent to a record Each column contains data about one attribute of an entity. This is equivalen ...
... Relational data model represents the conceptual and external level schemas as if data are stored in tables. Table Each row, a tuple, contains data about one instance of an entity. This is equivalent to a record Each column contains data about one attribute of an entity. This is equivalen ...
Lecture 1: Introduction
... of data, using a given data model. The relational model of data is the most widely used model today. Main concept: relation, basically a table with rows and columns. Every relation has a schema, which describes the ...
... of data, using a given data model. The relational model of data is the most widely used model today. Main concept: relation, basically a table with rows and columns. Every relation has a schema, which describes the ...
Slide 1
... 97030 – which would be a complete waste of time/resources OR, you could “slice” the original table to “create” a table containing ONLY those in zip code 97030. To “slice” the table, use a Query. The Query can specify any number of criteria to get the resulting sub-table needed AND saving the Query b ...
... 97030 – which would be a complete waste of time/resources OR, you could “slice” the original table to “create” a table containing ONLY those in zip code 97030. To “slice” the table, use a Query. The Query can specify any number of criteria to get the resulting sub-table needed AND saving the Query b ...
- TehraTechnologies
... The system has three Access databases on three different machines. The database structures are as described in the problem statement earlier. Just above the databases on each machine is a Query Database object. The Query Database object can talk to the Database and make queries on it. Since the Quer ...
... The system has three Access databases on three different machines. The database structures are as described in the problem statement earlier. Just above the databases on each machine is a Query Database object. The Query Database object can talk to the Database and make queries on it. Since the Quer ...
Application development example: a class roster database
... Add, delete, and edit records Create an RSS feed showing database changes Search and sort Rearrange, hide or display columns Import data from xls, csv, tsv or email Export as spreadsheet, csv, pdf, json, tsv or html Create permalink to data entry form Include data entry form in your Web site Create ...
... Add, delete, and edit records Create an RSS feed showing database changes Search and sort Rearrange, hide or display columns Import data from xls, csv, tsv or email Export as spreadsheet, csv, pdf, json, tsv or html Create permalink to data entry form Include data entry form in your Web site Create ...
Database Application Assignment
... • Ensure each of the queries/statements is expressed in some way in the use cases in your group ...
... • Ensure each of the queries/statements is expressed in some way in the use cases in your group ...
Chapter 1 Notes
... System Requirements (con’t) • Long Lifetime: complex systems are not easily replaced – Must be designed so they can be easily extended as the needs of the enterprise change ...
... System Requirements (con’t) • Long Lifetime: complex systems are not easily replaced – Must be designed so they can be easily extended as the needs of the enterprise change ...
Database First - Microsoft Center
... ©2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, Office, Azure, System Center, Dynamics and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the ...
... ©2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, Office, Azure, System Center, Dynamics and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the ...
Dimensional Modeling
... business model of the data warehouse. Translate this into a dimensional model. This step reflects the information and analytical characteristics of the data warehouse. Translate this into the physical model. This reflects the changes necessary to reach the stated performance objectives. ...
... business model of the data warehouse. Translate this into a dimensional model. This step reflects the information and analytical characteristics of the data warehouse. Translate this into the physical model. This reflects the changes necessary to reach the stated performance objectives. ...
Overview of Databases and Transaction Processing What is a
... System Analyst - specifies system using input from customer; provides complete description of functionality from customer s and user s point of view Database Designer - specifies structure of data that will be stored in database Application Programmer - implements application programs (transactions) ...
... System Analyst - specifies system using input from customer; provides complete description of functionality from customer s and user s point of view Database Designer - specifies structure of data that will be stored in database Application Programmer - implements application programs (transactions) ...
SQL Origins - cse.sc.edu
... A database is a software program which allows for storage and retrieval of information on a computer hard drive’s file system or other device. A relational database is a database that allows for queries which typically use Structured Query Language (SQL) to store and retrieve data. ...
... A database is a software program which allows for storage and retrieval of information on a computer hard drive’s file system or other device. A relational database is a database that allows for queries which typically use Structured Query Language (SQL) to store and retrieve data. ...
A Short History of Database Technology Traditional File
... • Most systems sold in the early 90’s are relational ...
... • Most systems sold in the early 90’s are relational ...
How data is stored
... – ALPHANUMERIC or CHARACTER TEXT these contain letters and numbers, but the numbers can not be manipulated. – NUMERIC - these numbers that can be ...
... – ALPHANUMERIC or CHARACTER TEXT these contain letters and numbers, but the numbers can not be manipulated. – NUMERIC - these numbers that can be ...
database fundamentals
... constraint rules – Data redundancy: if data can be found in two places in a single database (direct redundancy) or calculated using data from different parts of the database (indirect redundancy) then redundancy exists. ...
... constraint rules – Data redundancy: if data can be found in two places in a single database (direct redundancy) or calculated using data from different parts of the database (indirect redundancy) then redundancy exists. ...
Databases and Data Warehouses: Building Business Intelligence
... information in a database (e.g. Order Number is a number of 6-digit field). When you create a database, you first create the data dictionary. RDBs are quite different from other ways of organizing information (e.g. Excel) where you need sometimes to take into consideration the row and column num ...
... information in a database (e.g. Order Number is a number of 6-digit field). When you create a database, you first create the data dictionary. RDBs are quite different from other ways of organizing information (e.g. Excel) where you need sometimes to take into consideration the row and column num ...
Indiana University of Pennsylvania Dr. Shubra
... Characteristics, advantages and implications of the database approach to information systems as contrasted with traditional integrated file systems. DBMS architecture including employing super data structures to implement relationships among records. The database system environment including data mo ...
... Characteristics, advantages and implications of the database approach to information systems as contrasted with traditional integrated file systems. DBMS architecture including employing super data structures to implement relationships among records. The database system environment including data mo ...
Relation
... • a view is a named query (result is usually computed when the view is used) create view WatVendors as select VNo, VName, VBal from Vendor where City = 'Waterloo'; • views can be used in retrieval exactly like tables (but updates of views are restricted) ...
... • a view is a named query (result is usually computed when the view is used) create view WatVendors as select VNo, VName, VBal from Vendor where City = 'Waterloo'; • views can be used in retrieval exactly like tables (but updates of views are restricted) ...
Session 7
... • Creates and maintains databases • Eliminates requirement for data definition statements • Acts as interface between application programs and physical data files • Separates logical and design views of data ...
... • Creates and maintains databases • Eliminates requirement for data definition statements • Acts as interface between application programs and physical data files • Separates logical and design views of data ...
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.