See also: Project Guidelines.
Online store of some kind (sim. to amazon.com and friends) books, CDs, electronic music (e.g., mp3), ... catalog, browsing, shopping cart functions, payment, fulfillment, ... Library DB Search collections, check status, checkout anc checkin, incorporate existing system Room scheduling distributed authorization very low maintenance easy report generation clickable, annotated map as UI Personal Information Manger (PIM) contacts, addresses, phones, ... appointments diary to-do list Something similar to the Elisp package bbdb.el Meeting scheduler XML in a RDB/ORDB UMD Parking lot information DB best parking based on destination, cost, etc. fallback lots special cases ease of update Restaurant/Cafe/Bar/Pub/... reviews DB Class schedule, prereq, comments, grading, etc. DB CS Personnel and/or Machine DB (simple) Info about every CS "entity": people, machines, labs, vending machines, rooms, ... Bank of AVW (simple) Debit, credit, billing, interest, ... Job postings DB Openings, contacts, references, reviews, requirements, bidding, ... USENET Data Miner (hard) Import data from USENET into RDB (fact table), import data from other sources for author info, group info, org info, ... (property tables), mine Data mining Web server logs (hard) Similar to USENET Data Miner Email (SMTP) server using a DBMS focus on novel functionality enabled or simplified by DBMS USENET (NNTP) server using a DBMS focus on novel functionality enabled or simplified by DBMS Storing graph data in a relational DB? DBMS survey(hard) Implement a very simple project on N DBMSs (preferably open source or free) for N > 3 and report experience. DBMS interface survey Implement a very simple project using M libraries or APIs (e.g., Perl libraries, Python libraries, and ODBC and JDBC bindings for C++) for M > 3 and report experience. Historical weather DB retrieve, parse, and store weather information from NWS and other *public domain* sources over time; implement browsing and querying that can be used to discover trends, records, trivia. Auction database Similar to eBay.com Historical traffic DB Similar to historical weather DB. Netnews server enhanced querying, consistency, security and control Personal finance DB Download data from the Net in popular formats (QIF, OFC, ...); analyze in interesting ways; trends; bill payments Write an ODBC or JDBC driver(ambitious) Database for WMUC (service)