Introduction to Database
... a value that is automatically inserted when no value is provided during data entry. • 6. Identify any columns for which domain specifications may be stated that are more constrained than those established by data type. Using CHECK it is possible to establish validation rules for values to be inserte ...
... a value that is automatically inserted when no value is provided during data entry. • 6. Identify any columns for which domain specifications may be stated that are more constrained than those established by data type. Using CHECK it is possible to establish validation rules for values to be inserte ...
Introduction to Database
... a value that is automatically inserted when no value is provided during data entry. • 6. Identify any columns for which domain specifications may be stated that are more constrained than those established by data type. Using CHECK it is possible to establish validation rules for values to be inserte ...
... a value that is automatically inserted when no value is provided during data entry. • 6. Identify any columns for which domain specifications may be stated that are more constrained than those established by data type. Using CHECK it is possible to establish validation rules for values to be inserte ...
lecture01
... SELECT Students.SSN, Courses.CID FROM Students, Courses WHERE Students.name = ‘Mary Johnson’ and Courses.name = ‘CSE444’ -- More updates here.... IF everything-went-OK THEN COMMIT; ELSE ROLLBACK ...
... SELECT Students.SSN, Courses.CID FROM Students, Courses WHERE Students.name = ‘Mary Johnson’ and Courses.name = ‘CSE444’ -- More updates here.... IF everything-went-OK THEN COMMIT; ELSE ROLLBACK ...
Database II
... Clients can book one or more properties with a rental agency. Each property can be booked by more than one client (for different dates). Trains arrive and depart from platforms in train stations, corresponding to the cities that they stop in. A city can have many Stations. ...
... Clients can book one or more properties with a rental agency. Each property can be booked by more than one client (for different dates). Trains arrive and depart from platforms in train stations, corresponding to the cities that they stop in. A city can have many Stations. ...
Diagnostic Quiz
... 5. The essence of the design process is a. learning how to listen. b. drawing elegant E-R diagrams. c. asking the right questions. d. knowing the hardware requirements. 6. Some of the important functions of the database guarantee the __________ and the __________ of the data in the database. a. inte ...
... 5. The essence of the design process is a. learning how to listen. b. drawing elegant E-R diagrams. c. asking the right questions. d. knowing the hardware requirements. 6. Some of the important functions of the database guarantee the __________ and the __________ of the data in the database. a. inte ...
Introduction to Database
... their own data Each application program needs to include code for the metadata of each file Each application program must have its own processing routines for reading, inserting, updating and deleting data Lack of coordination and central control Non-standard file formats ...
... their own data Each application program needs to include code for the metadata of each file Each application program must have its own processing routines for reading, inserting, updating and deleting data Lack of coordination and central control Non-standard file formats ...
database fundamentals
... • A relation is in 2NF if it contains no repeating groups and no partial key functional dependencies –Rule: A relation in 1NF with a single key field must be in 2NF –To convert a relation with partial functional dependencies to 2NF. create a set of new relations: •One relation for the attributes tha ...
... • A relation is in 2NF if it contains no repeating groups and no partial key functional dependencies –Rule: A relation in 1NF with a single key field must be in 2NF –To convert a relation with partial functional dependencies to 2NF. create a set of new relations: •One relation for the attributes tha ...
Database
... similar tasks • Most organizations dedicate one or more employees to the role of database administration. ...
... similar tasks • Most organizations dedicate one or more employees to the role of database administration. ...
Document
... Sql.Database = (server as text, database as text, optional options as nullable record) as table MyCoolFunction = (index as number, category as text) as nullable table ...
... Sql.Database = (server as text, database as text, optional options as nullable record) as table MyCoolFunction = (index as number, category as text) as nullable table ...
Data, Dataset and Database
... Data, Dataset and Database • Data is information typically the results of measurement (numerical) or counting (categorical). • Dataset is a collection of data, usually presented in tabular form. Each column represents a particular variable and each row corresponds to a given member of the data. • D ...
... Data, Dataset and Database • Data is information typically the results of measurement (numerical) or counting (categorical). • Dataset is a collection of data, usually presented in tabular form. Each column represents a particular variable and each row corresponds to a given member of the data. • D ...
Peter Blanchfield - School of Computer Science
... • A number of texts in Library – Database Systems - A Practical Approach to Design, Implementation, and Management, Connolly & Begg (source of some diagrams) – Fundamentals of Database Systems, Elmasri & Navathe – Database Systems, Beynon-Davies – Database Systems, Date ...
... • A number of texts in Library – Database Systems - A Practical Approach to Design, Implementation, and Management, Connolly & Begg (source of some diagrams) – Fundamentals of Database Systems, Elmasri & Navathe – Database Systems, Beynon-Davies – Database Systems, Date ...
Exec Circle - BSC - BDM Presentation
... It contains two-dimensional tables with rows and columns. Each column corresponds to a sub-object or an attribute of the object represented by the entire table Each row represents a unique instance of that sub-object or attribute and must be different in some way from any other row (that is, no dupl ...
... It contains two-dimensional tables with rows and columns. Each column corresponds to a sub-object or an attribute of the object represented by the entire table Each row represents a unique instance of that sub-object or attribute and must be different in some way from any other row (that is, no dupl ...
IT360 12 week Exam Review Sheet 1. PHP
... IT360 12 week Exam Review Sheet 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 r ...
... IT360 12 week Exam Review Sheet 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 r ...
09-data-persistence
... • Stored in XML files in internal storage • Allows preference data values to automatically persist throughout sessions, regardless of how they end, e.g., exit of an application, shutdown of the device, or ...
... • Stored in XML files in internal storage • Allows preference data values to automatically persist throughout sessions, regardless of how they end, e.g., exit of an application, shutdown of the device, or ...
Types of Data Supported
... Regex Parsable Text Files - Specify the file or folder, enter a Regex pattern for processing the data, and specify whether the first row contains the column headers. Sequence File with Metadata - A flat file consisting of binary key/value pairs. It is extensively used in MapReduce as input/output fo ...
... Regex Parsable Text Files - Specify the file or folder, enter a Regex pattern for processing the data, and specify whether the first row contains the column headers. Sequence File with Metadata - A flat file consisting of binary key/value pairs. It is extensively used in MapReduce as input/output fo ...
Notes on Stored Procedures - Rose
... Shadow information is any data that objects need to maintain, above and beyond their normal domain data, to persist themselves. This typically includes primary key information, particularly when the primary key is a surrogate key that has no business meaning, concurrency control markings such as tim ...
... Shadow information is any data that objects need to maintain, above and beyond their normal domain data, to persist themselves. This typically includes primary key information, particularly when the primary key is a surrogate key that has no business meaning, concurrency control markings such as tim ...
Document
... Data independence: Application programs not dependent on data representation and storage details Data sharing: data is better utilized (discovered and reused), redundancy of data is minimized Data integrity and consistency: one may enforce consistency constraints on data, e.g., number of seats sold ...
... Data independence: Application programs not dependent on data representation and storage details Data sharing: data is better utilized (discovered and reused), redundancy of data is minimized Data integrity and consistency: one may enforce consistency constraints on data, e.g., number of seats sold ...
Database Systems
... – Failure may lead database to an inconsistent state with partial updates carried out – E.g. Transfer of funds from one account to another should either be complete or incomplete, no inbetween state ...
... – Failure may lead database to an inconsistent state with partial updates carried out – E.g. Transfer of funds from one account to another should either be complete or incomplete, no inbetween state ...
PowerPoint
... User B now modifies the specification for product X User A proceeds to the final stage of the transaction but sees that the specification has changed There is no way of going back to the original read of the data ...
... User B now modifies the specification for product X User A proceeds to the final stage of the transaction but sees that the specification has changed There is no way of going back to the original read of the data ...
What is an Access? Tables, Forms, Queries, and
... − Query: displays specific data from tables based on a criteria you request. − Report: a professional print-out that can be used from the data inputted from the database. Copyright © Texas Education Agency, 2011. All rights reserved. ...
... − Query: displays specific data from tables based on a criteria you request. − Report: a professional print-out that can be used from the data inputted from the database. Copyright © Texas Education Agency, 2011. All rights reserved. ...
DatZ2003
... be able to perform database design and implement it with chosen DBMS, be able to create SQL queries, be able to use database technology, be able to install and configure Microsoft SQL and MySQL DBMS, be able to administer users in DBMS system, be able to administer access right in DVBS s ...
... be able to perform database design and implement it with chosen DBMS, be able to create SQL queries, be able to use database technology, be able to install and configure Microsoft SQL and MySQL DBMS, be able to administer users in DBMS system, be able to administer access right in DVBS s ...
Slide - CIS @ Temple University
... is a program module that provides the interface between the low-level data stored in the database and the application programs and queries submitted to the system. ...
... is a program module that provides the interface between the low-level data stored in the database and the application programs and queries submitted to the system. ...
