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What do you need to establish to ensure that there are no duplicate records in a database?
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Why do the Primary keys need to be unique?
Primary key helps differentiate the data in a table which contains multiple occurrences of any value in columns. Besides that it is considered good programming practice which will ensure that there is no duplication of data in database thereby saving server space.
Two principal integrity rules for the relational model?
Integrity Rules Although integrity rules are not part of normal forms, they are definitely part of the database design process. Integrity rules are broken into two categories. They include overall integrity rules and database-specific integrity rules. == The two types of overall integrity rules are referential integrity rules and entity integrity rules. Referential integrity rules dictate that a database does not contain orphan foreign key values. This means thatEntity integrity dictates that the primary key value cannot be Null. This rule applies not only to single-column primary keys, but also to multi-column primary keys. In fact, in a multi-column primary key, no field in the primary key can be Null. This makes sense because, if any part of the primary key can be Null, the primary key can no longer act as a unique identifier for the row. Fortunately, the Access Database Engine (Access 2007's new version of the JET database engine, available with the new ACCDB file format) does not allow a field in a primary key to be Null.Database-Specific Rules The other set of rules applied to a database are not applicable to all databases but are, instead, dictated by business rules that apply to a specific application. Database-specific rules are as important as overall integrity rules. They ensure that only valid data is entered into a database. An example of a database-specific integrity rule is that the delivery date for an order must fall after the order date.
Explain what cardinality constraints are and how they impact on database design?
Cardinality constraints are rules that define the relationships between tables in a database. They determine how many instances of one entity can be associated with another entity. For example, a cardinality constraint of "one-to-one" means that each instance of one entity can be associated with only one instance of another entity. Cardinality constraints impact database design by helping ensure data integrity and preventing inconsistencies or anomalies. They guide the creation of tables, their relationships, and the use of foreign keys for maintaining data relationships.
Where do you get boost plus and ensure plus?
i saw ensure plus at CVS the last time i went to get some medicine. Its by the medicine section at CVS.
How can you ensure accuracy in pattern drafting?
Haahah
Explain how records and related records are deleted to ensure the integrity and consistency of the database is maintained?
Do it yourself. P.S Im a BTEC National Teacher.
How are records and related records deleted to ensure that the integrity and consistency of the database is maintained?
hows the btec national going..... by the way you cant get away with copy and pasteing....ps: this is unit 5 of the btec natinal (soft-dev )
What are duties of FARMs and RCs in regard in to vital recods?
-ensure that vital records and copies of vital records are adequately protected, accessible, and immediately usable -to ensure that all staff are informed about vital records -to ensure that the identification of vital records is currecnt and complete
What is a CBC residue?
The last ciphertext block of the previous record. It is is sometimes xor'd with the plaintext of the next record to ensure duplicate plaintext does not encrypt to duplicate cipher text.
What are the day to day electronic records keeping responsibilities of the records custodian?
- delete records according to disposition instructions - transfer electronic records to electronic media designated for the inactive files area - establish the files maintenance and disposition plan - assist personnel with understanding electronic filing requirements - work with NCC and FARM to ensure files are backed up
What duties are of FARMs and RCs in regard to vital records?
ensure all staff are informed about vital recordsensure that the edentification of vital records is current and completeensure that vital records and copies of vital records are adequately protectedEnsure vital records and copies of vital records are adequately protected, accessable, and immediately usable; ensure that all staff are informed about vital records; ensure the identification of vital records is current and complete.
What does the chief of the office of records not ensure?
which publications include mandates for records management
How do you ensure security when reading or making entries into records?
when reading or making entries into records do it in a quiet or safe enviroment to ensure that confidentiality is not broken and that only the people who need to see the records can.
Why must banks ensure that their customer database is accurate and up to date if they want to sell more products?
Explain why is it essential that banks ensure that their customer database is accurate and up to date if they want to sell more products.?
What is the purpose of database auditing?
Database auditing is used to observe the actions of the database users. It is commonly used for security purposes to ensure that information is only accessed by those with the proper authority to view it.
What are the responsibilities of DBA and the database designers?
The responsibilities of the DBA and the database designers is to prevent conflict of data between different departments and to ensure the security of the data.
Vital records ensure ability to continue mission essential activities in times of disaster?
True, vital records are used during disasters to ensure mission essential activities can continue.
